Manual

Conners 4 Manual

Chapter 8: Reliability, Tables

Table 8.1a. Internal Consistency: Conners 4 Parent Normative Samples Content Scales

Scale	Number of Items	Age Group	Combined Gender				Males				Females
Scale	Number of Items	Age Group	N	α	ω	MIC	N	α	ω	MIC	N	α	ω	MIC
Inattention/Executive Dysfunction	20	6 to 7	260	.97	.97	.49	130	.96	.96	.48	130	.97	.97	.51
		8 to 9	260	.97	.97	.55	130	.98	.98	.60	130	.97	.97	.50
		10 to 11	260	.97	.97	.53	130	.96	.97	.52	130	.97	.97	.53
		12 to 13	260	.97	.97	.50	130	.98	.98	.52	130	.97	.97	.49
		14 to 15	260	.97	.97	.48	130	.97	.97	.46	130	.97	.97	.50
		16 to 18	260	.97	.97	.55	130	.97	.97	.59	130	.97	.97	.48
Hyperactivity	11	6 to 7	260	.93	.93	.43	130	.93	.93	.43	130	.93	.93	.44
		8 to 9	260	.92	.93	.43	130	.93	.94	.47	130	.91	.92	.39
		10 to 11	260	.93	.93	.45	130	.92	.93	.47	130	.93	.93	.44
		12 to 13	260	.93	.93	.36	130	.94	.94	.35	130	.92	.92	.37
		14 to 15	260	.94	.94	.46	130	.94	.94	.46	130	.93	.94	.47
		16 to 18	260	.91	.91	.44	130	.91	.91	.49	130	.92	.92	.39
Impulsivity	9	6 to 7	260	.92	.92	.44	130	.92	.92	.42	130	.92	.92	.45
		8 to 9	260	.92	.92	.48	130	.93	.93	.48	130	.89	.90	.47
		10 to 11	260	.91	.92	.54	130	.91	.91	.56	130	.92	.92	.52
		12 to 13	260	.93	.93	.41	130	.93	.93	.40	130	.92	.92	.42
		14 to 15	260	.94	.95	.49	130	.95	.95	.48	130	.94	.94	.49
		16 to 18	260	.91	.91	.46	130	.91	.91	.51	130	.92	.92	.39
Emotional Dysregulation	8	6 to 7	260	.93	.93	.54	130	.93	.93	.56	130	.94	.94	.52
		8 to 9	260	.94	.94	.59	130	.95	.95	.59	130	.94	.94	.59
		10 to 11	260	.94	.94	.60	130	.95	.95	.66	130	.94	.94	.53
		12 to 13	260	.95	.95	.59	130	.95	.95	.59	130	.95	.95	.59
		14 to 15	260	.95	.95	.53	130	.97	.97	.53	130	.94	.94	.54
		16 to 18	260	.95	.95	.56	130	.95	.95	.57	130	.96	.96	.54
Depressed Mood	6	6 to 7	260	.91	.92	.36	130	.89	.89	.33	130	.93	.94	.37
		8 to 9	260	.90	.90	.44	130	.92	.92	.45	130	.86	.87	.44
		10 to 11	260	.88	.89	.57	130	.88	.89	.58	130	.88	.88	.55
		12 to 13	260	.90	.90	.47	130	.89	.90	.51	130	.90	.91	.42
		14 to 15	260	.93	.94	.45	130	.94	.94	.34	130	.93	.93	.54
		16 to 18	260	.91	.91	.41	130	.93	.93	.46	130	.89	.89	.33
Anxious Thoughts	5	6 to 7	260	.88	.88	.46	130	.86	.86	.42	130	.90	.90	.47
		8 to 9	260	.91	.91	.52	130	.92	.92	.56	130	.89	.89	.48
		10 to 11	260	.89	.89	.58	130	.88	.89	.60	130	.89	.90	.56
		12 to 13	260	.92	.92	.49	130	.93	.93	.46	130	.90	.91	.51
		14 to 15	260	.92	.92	.44	130	.94	.94	.38	130	.91	.91	.50
		16 to 18	260	.91	.91	.50	130	.91	.91	.54	130	.90	.91	.45

Note. α = alpha; ω = omega; MIC = mean inter-item correlation.

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Table 8.1b. Internal Consistency: Conners 4 Parent Normative Samples Impairment & Functional Outcome Scales

Scale	Number of Items	Age Group	Combined Gender				Males				Females
Scale	Number of Items	Age Group	N	α	ω	MIC	N	α	ω	MIC	N	α	ω	MIC
Schoolwork	6	6 to 7	260	.90	.91	.45	130	.93	.93	.44	130	.88	.89	.45
		8 to 9	260	.91	.91	.49	130	.92	.92	.52	130	.89	.89	.42
		10 to 11	260	.91	.91	.47	130	.92	.92	.50	130	.90	.91	.46
		12 to 13	260	.92	.92	.38	130	.92	.93	.44	130	.90	.90	.29
		14 to 15	260	.91	.91	.43	130	.92	.92	.49	130	.90	.91	.38
		16 to 18	260	.88	.88	.47	130	.89	.90	.51	130	.86	.86	.40
Peer Interactions	6	6 to 7	260	.87	.88	.52	130	.85	.87	.46	130	.88	.89	.57
		8 to 9	260	.90	.91	.58	130	.91	.92	.62	130	.88	.89	.51
		10 to 11	260	.91	.92	.58	130	.89	.90	.65	130	.93	.93	.51
		12 to 13	260	.93	.93	.59	130	.94	.94	.60	130	.91	.92	.56
		14 to 15	260	.93	.93	.39	130	.95	.95	.39	130	.90	.92	.40
		16 to 18	260	.94	.94	.49	130	.93	.94	.52	130	.93	.94	.44
Family Life	7	6 to 7	260	.95	.95	.58	130	.96	.96	.58	130	.95	.95	.57
		8 to 9	260	.94	.94	.57	130	.95	.95	.59	130	.93	.94	.57
		10 to 11	260	.95	.95	.61	130	.95	.95	.64	130	.95	.95	.58
		12 to 13	260	.95	.95	.53	130	.96	.96	.60	130	.95	.95	.47
		14 to 15	260	.95	.95	.59	130	.96	.96	.61	130	.94	.94	.58
		16 to 18	260	.94	.94	.54	130	.95	.95	.56	130	.92	.93	.50

Note. α = alpha; ω = omega; MIC = mean inter-item correlation.

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Table 8.1c. Internal Consistency: Conners 4 Parent Normative Samples DSM Symptom Scales

Scale	Number of Items	Age Group	Combined Gender				Males				Females
Scale	Number of Items	Age Group	N	α	ω	MIC	N	α	ω	MIC	N	α	ω	MIC
ADHD Inattentive Symptoms	11	6 to 7	260	.93	.94	.48	130	.93	.93	.46	130	.94	.94	.51
		8 to 9	260	.94	.95	.54	130	.96	.96	.58	130	.93	.93	.49
		10 to 11	260	.94	.94	.51	130	.94	.94	.51	130	.95	.95	.52
		12 to 13	260	.95	.95	.50	130	.96	.96	.50	130	.94	.94	.49
		14 to 15	260	.95	.95	.46	130	.94	.94	.45	130	.95	.95	.48
		16 to 18	260	.94	.94	.52	130	.94	.95	.57	130	.94	.94	.44
ADHD Hyperactive/Impulsive Symptoms	13	6 to 7	260	.94	.94	.41	130	.94	.94	.41	130	.94	.94	.42
		8 to 9	260	.94	.94	.43	130	.95	.95	.44	130	.92	.92	.41
		10 to 11	260	.93	.93	.47	130	.93	.93	.48	130	.94	.94	.48
		12 to 13	260	.94	.94	.34	130	.94	.94	.34	130	.93	.94	.33
		14 to 15	260	.95	.95	.46	130	.95	.95	.45	130	.95	.95	.47
		16 to 18	260	.92	.92	.44	130	.92	.92	.49	130	.92	.92	.38
Total ADHD Symptoms	24	6 to 7	260	.96	.96	.39	130	.96	.96	.49	130	.97	.97	.41
		8 to 9	260	.96	.96	.43	130	.97	.97	.58	130	.95	.95	.40
		10 to 11	260	.96	.96	.43	130	.95	.95	.58	130	.96	.96	.45
		12 to 13	260	.96	.97	.36	130	.97	.97	.55	130	.96	.96	.35
		14 to 15	260	.97	.97	.44	130	.96	.97	.52	130	.97	.97	.45
		16 to 18	260	.96	.96	.43	130	.96	.96	.53	130	.96	.96	.36
Oppositional Defiant Disorder Symptoms	10	6 to 7	260	.94	.95	.49	130	.95	.95	.49	130	.94	.94	.49
		8 to 9	260	.95	.95	.59	130	.95	.95	.58	130	.94	.94	.58
		10 to 11	260	.94	.95	.54	130	.94	.95	.58	130	.94	.95	.50
		12 to 13	260	.96	.96	.51	130	.96	.96	.55	130	.96	.96	.46
		14 to 15	260	.95	.95	.50	130	.96	.96	.52	130	.94	.95	.47
		16 to 18	260	.95	.95	.50	130	.96	.96	.53	130	.94	.94	.45
Conduct Disorder Symptoms	15	6 to 7	260	.96	.96	.41	130	.78	.79	.48	130	.96	.96	.37
		8 to 9	260	.97	.97	.34	130	.94	.95	.36	130	.96	.96	.33
		10 to 11	260	.97	.97	.44	130	.93	.94	.24	130	.96	.96	.57
		12 to 13	260	.96	.96	.31	130	.91	.91	.35	130	.93	.94	.31
		14 to 15	260	.97	.97	.32	130	.86	.87	.27	130	.98	.98	.34
		16 to 18	260	.95	.96	.42	130	.89	.90	.44	130	.79	.81	.35

Note. α = alpha; ω = omega; MIC = mean inter-item correlation. DSM Conduct Disorder Symptoms items 17 and 70 were removed from MIC analyses for Males due to sparse data.

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Table 8.2a. Internal Consistency: Conners 4 Teacher Normative Samples Content Scales

Scale	Number of Items	Age Group	Combined Gender				Males				Females
Scale	Number of Items	Age Group	N	α	ω	MIC	N	α	ω	MIC	N	α	ω	MIC
Inattention/ Executive Dysfunction	20	6 to 7	260	.98	.98	.61	130	.98	.98	.61	130	.98	.98	.58
		8 to 9	260	.98	.98	.56	130	.98	.98	.57	130	.97	.97	.54
		10 to 11	260	.98	.98	.61	130	.98	.98	.61	130	.98	.98	.59
		12 to 13	260	.98	.98	.57	130	.98	.98	.57	130	.97	.97	.56
		14 to 15	260	.98	.98	.58	130	.98	.98	.59	130	.98	.98	.56
		16 to 18	260	.98	.98	.59	130	.97	.98	.60	130	.98	.98	.55
Hyperactivity	11	6 to 7	260	.96	.96	.54	130	.95	.95	.56	130	.96	.96	.48
		8 to 9	260	.95	.95	.47	130	.96	.96	.47	130	.94	.94	.47
		10 to 11	260	.95	.96	.56	130	.96	.96	.57	130	.95	.95	.53
		12 to 13	260	.94	.94	.43	130	.94	.94	.44	130	.94	.94	.43
		14 to 15	260	.96	.96	.58	130	.96	.96	.58	130	.96	.96	.56
		16 to 18	260	.93	.94	.55	130	.93	.94	.59	130	.94	.94	.48
Impulsivity	9	6 to 7	260	.95	.95	.55	130	.95	.95	.56	130	.96	.96	.49
		8 to 9	260	.95	.95	.54	130	.95	.95	.52	130	.94	.94	.56
		10 to 11	260	.95	.95	.55	130	.95	.95	.57	130	.94	.94	.51
		12 to 13	260	.95	.95	.48	130	.94	.94	.50	130	.95	.95	.45
		14 to 15	260	.95	.95	.60	130	.95	.95	.58	130	.94	.94	.61
		16 to 18	260	.94	.94	.56	130	.94	.94	.58	130	.94	.94	.51
Emotional Dysregulation	8	6 to 7	260	.97	.97	.71	130	.98	.98	.77	130	.97	.97	.60
		8 to 9	260	.97	.97	.64	130	.98	.98	.68	130	.96	.96	.61
		10 to 11	260	.97	.97	.62	130	.98	.98	.62	130	.96	.96	.61
		12 to 13	260	.97	.97	.58	130	.97	.97	.61	130	.96	.96	.55
		14 to 15	260	.97	.97	.69	130	.97	.97	.72	130	.97	.97	.63
		16 to 18	260	.96	.96	.70	130	.96	.96	.76	130	.95	.95	.60
Depressed Mood	6	6 to 7	260	.92	.92	.54	130	.93	.93	.56	130	.89	.90	.52
		8 to 9	260	.91	.91	.52	130	.91	.91	.47	130	.91	.92	.57
		10 to 11	260	.93	.93	.47	130	.93	.94	.45	130	.93	.94	.50
		12 to 13	260	.92	.93	.44	130	.91	.92	.42	130	.93	.94	.45
		14 to 15	260	.91	.91	.43	130	.90	.91	.49	130	.91	.91	.35
		16 to 18	260	.90	.90	.44	130	.89	.89	.46	130	.91	.91	.41
Anxious Thoughts	5	6 to 7	260	.93	.93	.51	130	.93	.93	.51	130	.93	.93	.51
		8 to 9	260	.89	.90	.39	130	.89	.90	.48	130	.89	.90	.32
		10 to 11	260	.90	.90	.49	130	.90	.91	.41	130	.90	.90	.54
		12 to 13	260	.85	.86	.47	130	.91	.91	.43	130	.79	.81	.52
		14 to 15	260	.89	.89	.56	130	.86	.88	.56	130	.90	.90	.56
		16 to 18	260	.89	.89	.47	130	.88	.89	.49	130	.90	.91	.45

Note. α = alpha; ω = omega; MIC = mean inter-item correlation.

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Table 8.2b. Internal Consistency: Conners 4 Teacher Normative Samples Impairment & Functional Outcome Scales

Scale	Number of Items	Age Group	Combined Gender				Males				Females
Scale	Number of Items	Age Group	N	α	ω	MIC	N	α	ω	MIC	N	α	ω	MIC
Schoolwork	6	6 to 7	260	.93	.93	.62	130	.93	.93	.57	130	.92	.93	.65
		8 to 9	260	.94	.94	.62	130	.94	.94	.63	130	.94	.94	.58
		10 to 11	260	.94	.94	.65	130	.93	.93	.66	130	.95	.95	.60
		12 to 13	260	.94	.94	.59	130	.95	.95	.60	130	.94	.94	.53
		14 to 15	260	.95	.95	.56	130	.95	.95	.57	130	.94	.94	.54
		16 to 18	260	.94	.94	.62	130	.94	.94	.63	130	.93	.93	.58
Peer Interactions	6	6 to 7	260	.94	.94	.62	130	.94	.94	.64	130	.95	.95	.60
		8 to 9	260	.94	.95	.54	130	.95	.95	.55	130	.93	.94	.54
		10 to 11	260	.95	.95	.40	130	.95	.95	.42	130	.95	.95	.36
		12 to 13	260	.93	.93	.48	130	.93	.94	.50	130	.93	.93	.45
		14 to 15	260	.88	.88	.58	130	.88	.88	.57	130	.87	.87	.60
		16 to 18	260	.91	.91	.61	130	.91	.91	.64	130	.91	.91	.55

Note. α = alpha; ω = omega; MIC = mean inter-item correlation.

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Table 8.2c. Internal Consistency: Conners 4 Teacher Normative Samples DSM Symptom Scales

Scale	Number of Items	Age Group	Combined Gender				Males				Females
Scale	Number of Items	Age Group	N	α	ω	MIC	N	α	ω	MIC	N	α	ω	MIC
ADHD Inattentive Symptoms	11	6 to 7	260	.96	.96	.61	130	.96	.96	.61	130	.96	.96	.59
		8 to 9	260	.96	.96	.58	130	.96	.96	.59	130	.95	.95	.56
		10 to 11	260	.96	.96	.61	130	.96	.96	.62	130	.96	.96	.58
		12 to 13	260	.96	.96	.59	130	.96	.96	.60	130	.96	.96	.55
		14 to 15	260	.96	.96	.59	130	.96	.96	.59	130	.96	.96	.57
		16 to 18	260	.96	.96	.59	130	.96	.96	.60	130	.96	.96	.56
ADHD Hyperactive/Impulsive Symptoms	13	6 to 7	260	.97	.97	.54	130	.96	.96	.56	130	.97	.97	.47
		8 to 9	260	.96	.96	.48	130	.96	.96	.46	130	.95	.96	.51
		10 to 11	260	.96	.96	.55	130	.96	.96	.57	130	.95	.95	.50
		12 to 13	260	.95	.95	.45	130	.95	.95	.45	130	.96	.96	.44
		14 to 15	260	.97	.97	.58	130	.97	.97	.58	130	.96	.96	.58
		16 to 18	260	.95	.95	.55	130	.94	.95	.57	130	.95	.95	.50
Total ADHD Symptoms	24	6 to 7	260	.98	.98	.51	130	.98	.98	.52	130	.98	.98	.46
		8 to 9	260	.97	.97	.48	130	.97	.97	.45	130	.97	.97	.50
		10 to 11	260	.97	.97	.51	130	.97	.97	.51	130	.97	.97	.49
		12 to 13	260	.97	.97	.44	130	.97	.97	.43	130	.97	.97	.41
		14 to 15	260	.98	.98	.54	130	.97	.97	.54	130	.97	.97	.52
		16 to 18	260	.97	.97	.50	130	.96	.97	.50	130	.97	.97	.46
Oppositional Defiant Disorder Symptoms	10	6 to 7	260	.97	.97	.69	130	.97	.97	.72	130	.97	.97	.60
		8 to 9	260	.97	.97	.62	130	.96	.96	.57	130	.97	.97	.66
		10 to 11	260	.98	.98	.53	130	.98	.98	.55	130	.97	.97	.50
		12 to 13	260	.97	.97	.56	130	.97	.97	.57	130	.98	.98	.53
		14 to 15	260	.96	.96	.63	130	.96	.96	.63	130	.96	.96	.63
		16 to 18	260	.96	.96	.60	130	.96	.96	.58	130	.96	.96	.61
Conduct Disorder Symptoms	15	6 to 7	260	.95	.95	.41	130	.94	.95	.46	130	.89	.90	.28
		8 to 9	260	.95	.95	.44	130	.86	.88	.38	130	.92	.93	.47
		10 to 11	260	.97	.97	.32	130	.97	.97	.33	130	.84	.86	.32
		12 to 13	260	.97	.97	.39	130	.90	.92	.39	130	.97	.97	.38
		14 to 15	260	.96	.96	.31	130	.88	.90	.34	130	.93	.95	.22
		16 to 18	260	.96	.96	.35	130	.96	.96	.39	130	.88	.89	.27

Note. α = alpha; ω = omega; MIC = mean inter-item correlation.

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Table 8.3a. Internal Consistency: Conners 4 Self-Report Normative Samples Content Scales

Scale	Number of Items	Age Group	Combined Gender				Males				Females
Scale	Number of Items	Age Group	N	α	ω	MIC	N	α	ω	MIC	N	α	ω	MIC
Inattention/Executive Dysfunction	20	8 to 9	220	.94	.94	.34	110	.95	.95	.35	110	.93	.93	.34
		10 to 11	220	.94	.94	.43	110	.94	.94	.45	110	.94	.94	.40
		12 to 13	220	.96	.96	.46	110	.96	.96	.49	110	.95	.95	.43
		14 to 15	220	.96	.96	.38	110	.96	.96	.40	110	.96	.96	.36
		16 to 18	220	.94	.95	.36	110	.95	.95	.40	110	.94	.94	.32
Hyperactivity	11	8 to 9	220	.90	.90	.33	110	.92	.92	.30	110	.88	.88	.37
		10 to 11	220	.89	.89	.38	110	.87	.87	.43	110	.91	.91	.31
		12 to 13	220	.91	.91	.38	110	.92	.93	.38	110	.88	.88	.38
		14 to 15	220	.90	.91	.33	110	.90	.91	.32	110	.91	.91	.34
		16 to 18	220	.89	.89	.37	110	.88	.88	.41	110	.90	.90	.31
Impulsivity	9	8 to 9	220	.86	.86	.35	110	.86	.87	.38	110	.85	.86	.32
		10 to 11	220	.87	.87	.33	110	.88	.88	.31	110	.86	.86	.35
		12 to 13	220	.87	.87	.42	110	.86	.86	.45	110	.88	.88	.39
		14 to 15	220	.90	.90	.34	110	.91	.91	.38	110	.89	.89	.30
		16 to 18	220	.87	.87	.32	110	.89	.89	.34	110	.85	.86	.30
Emotional Dysregulation	8	8 to 9	220	.87	.87	.44	110	.88	.88	.46	110	.86	.87	.43
		10 to 11	220	.90	.90	.46	110	.91	.91	.47	110	.90	.90	.46
		12 to 13	220	.91	.91	.48	110	.92	.92	.49	110	.91	.91	.47
		14 to 15	220	.91	.92	.44	110	.92	.92	.51	110	.91	.91	.39
		16 to 18	220	.91	.91	.36	110	.93	.93	.38	110	.88	.89	.35
Depressed Mood	6	8 to 9	220	.84	.84	.35	110	.81	.82	.29	110	.86	.86	.40
		10 to 11	220	.84	.85	.44	110	.78	.80	.44	110	.88	.89	.45
		12 to 13	220	.89	.90	.51	110	.90	.91	.47	110	.89	.89	.55
		14 to 15	220	.91	.91	.47	110	.90	.90	.42	110	.93	.93	.51
		16 to 18	220	.90	.90	.32	110	.88	.88	.28	110	.92	.92	.37
Anxious Thoughts	6	8 to 9	220	.91	.91	.48	110	.92	.92	.44	110	.89	.89	.51
		10 to 11	220	.90	.90	.53	110	.88	.88	.48	110	.91	.91	.57
		12 to 13	220	.92	.92	.59	110	.90	.91	.58	110	.93	.93	.60
		14 to 15	220	.93	.93	.54	110	.93	.93	.46	110	.93	.93	.61
		16 to 18	220	.91	.91	.49	110	.88	.89	.51	110	.93	.93	.48

Note. α = alpha; ω = omega; MIC = mean inter-item correlation.

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Table 8.3b. Internal Consistency: Conners 4 Self-Report Normative Samples Impairment & Functional Outcome Scales

Scale	Number of Items	Age Group	Combined Gender				Males				Females
Scale	Number of Items	Age Group	N	α	ω	MIC	N	α	ω	MIC	N	α	ω	MIC
Schoolwork	6	8 to 9	220	.82	.83	.31	110	.85	.86	.33	110	.79	.80	.28
		10 to 11	220	.82	.83	.37	110	.83	.84	.39	110	.81	.81	.36
		12 to 13	220	.86	.87	.36	110	.86	.87	.35	110	.85	.87	.37
		14 to 15	220	.85	.86	.35	110	.84	.85	.33	110	.86	.87	.37
		16 to 18	220	.84	.85	.31	110	.83	.85	.35	110	.85	.86	.27
Peer Interactions	6	8 to 9	220	.82	.84	.30	110	.80	.82	.31	110	.85	.86	.29
		10 to 11	220	.80	.81	.27	110	.80	.81	.25	110	.80	.82	.29
		12 to 13	220	.79	.80	.31	110	.78	.80	.33	110	.80	.81	.28
		14 to 15	220	.81	.82	.28	110	.82	.84	.26	110	.80	.81	.31
		16 to 18	220	.79	.80	.35	110	.78	.78	.32	110	.80	.81	.38
Family Life	7	8 to 9	220	.83	.83	.40	110	.83	.84	.39	110	.82	.83	.41
		10 to 11	220	.87	.88	.32	110	.87	.87	.35	110	.88	.88	.30
		12 to 13	220	.83	.83	.45	110	.86	.86	.49	110	.80	.80	.41
		14 to 15	220	.89	.89	.40	110	.90	.91	.46	110	.87	.88	.36
		16 to 18	220	.85	.86	.32	110	.88	.89	.32	110	.84	.85	.31

Note. α = alpha; ω = omega; MIC = mean inter-item correlation.

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Table 8.3c. Internal Consistency: Conners 4 Self-Report Normative Samples DSM Symptom Scales

Scale	Number of Items	Age Group	Combined Gender				Males				Females
Scale	Number of Items	Age Group	N	α	ω	MIC	N	α	ω	MIC	N	α	ω	MIC
ADHD Inattentive Symptoms	11	8 to 9	220	.90	.90	.31	110	.91	.91	.31	110	.87	.88	.32
		10 to 11	220	.88	.89	.39	110	.89	.89	.42	110	.89	.89	.36
		12 to 13	220	.92	.92	.43	110	.92	.93	.46	110	.90	.91	.40
		14 to 15	220	.93	.93	.36	110	.93	.93	.37	110	.92	.92	.35
		16 to 18	220	.90	.91	.34	110	.91	.91	.37	110	.90	.90	.29
ADHD Hyperactive/Impulsive Symptoms	13	8 to 9	220	.91	.91	.32	110	.92	.92	.29	110	.89	.90	.36
		10 to 11	220	.89	.90	.31	110	.88	.88	.36	110	.91	.91	.26
		12 to 13	220	.89	.90	.36	110	.91	.91	.38	110	.87	.87	.35
		14 to 15	220	.91	.91	.30	110	.91	.91	.30	110	.91	.91	.29
		16 to 18	220	.88	.88	.36	110	.88	.88	.38	110	.88	.89	.32
Total ADHD Symptoms	24	8 to 9	220	.94	.95	.30	110	.95	.95	.29	110	.93	.93	.31
		10 to 11	220	.93	.94	.32	110	.93	.93	.36	110	.94	.94	.29
		12 to 13	220	.94	.95	.37	110	.95	.95	.38	110	.94	.94	.35
		14 to 15	220	.95	.95	.30	110	.95	.95	.30	110	.95	.95	.30
		16 to 18	220	.94	.94	.33	110	.94	.94	.38	110	.94	.94	.28
Oppositional Defiant Disorder Symptoms	10	8 to 9	220	.90	.90	.38	110	.90	.90	.38	110	.89	.89	.37
		10 to 11	220	.91	.91	.40	110	.91	.91	.41	110	.91	.91	.38
		12 to 13	220	.92	.92	.41	110	.92	.93	.44	110	.91	.91	.38
		14 to 15	220	.92	.92	.37	110	.92	.93	.42	110	.91	.92	.31
		16 to 18	220	.90	.90	.33	110	.92	.92	.34	110	.88	.88	.32
Conduct Disorder Symptoms	15	8 to 9	220	.92	.93	.25	110	.89	.90	—	110	.91	.92	.32
		10 to 11	220	.94	.94	.24	110	.86	.86	—	110	.94	.94	.23
		12 to 13	220	.93	.93	.35	110	.86	.86	—	110	.91	.91	.22
		14 to 15	220	.95	.96	.35	110	.89	.90	—	110	.74	.77	.21
		16 to 18	220	.95	.95	.25	110	.90	.91	—	110	.87	.88	.28

Note. α = alpha; ω = omega; MIC = mean inter-item correlation. Mean inter-item correlations for DSM Conduct Disorder Symptoms for Males could not be calculated due to sparse data for certain items.

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Table 8.4. Internal Consistency: Conners 4 Parent ADHD Reference Samples

Scale		Number of Items	Age Group	Combined Gender				Males				Females
Scale		Number of Items	Age Group	N	α	ω	MIC	N	α	ω	MIC	N	α	ω	MIC
Content Scales	Inattention/Executive Dysfunction	20	6 to 12	358	.94	.95	.48	237	.95	.95	.47	121	.94	.94	.50
	Inattention/Executive Dysfunction	20	13 to 18	202	.96	.96	.40	131	.96	.96	.41	71	.96	.97	.36
	Hyperactivity	11	6 to 12	358	.93	.93	.45	237	.93	.93	.44	121	.93	.93	.48
	Hyperactivity	11	13 to 18	202	.93	.93	.47	131	.92	.92	.48	71	.94	.94	.47
	Impulsivity	9	6 to 12	358	.91	.91	.53	237	.91	.91	.54	121	.93	.93	.51
	Impulsivity	9	13 to 18	202	.93	.93	.47	131	.94	.94	.45	71	.93	.93	.51
	Emotional Dysregulation	8	6 to 12	358	.94	.94	.67	237	.94	.94	.65	121	.94	.95	.73
	Emotional Dysregulation	8	13 to 18	202	.96	.96	.60	131	.96	.96	.60	71	.97	.97	.59
	Depressed Mood	6	6 to 12	358	.89	.90	.51	237	.88	.89	.53	121	.90	.91	.47
	Depressed Mood	6	13 to 18	202	.90	.91	.46	131	.91	.91	.44	71	.89	.90	.50
	Anxious Thoughts	5	6 to 12	358	.90	.90	.56	237	.89	.89	.57	121	.92	.92	.55
	Anxious Thoughts	5	13 to 18	202	.91	.91	.53	131	.91	.91	.49	71	.90	.90	.58
Impairment & Functional Outcome Scales	Schoolwork	6	6 to 12	358	.87	.88	.57	237	.88	.89	.54	121	.85	.86	.62
	Schoolwork	6	13 to 18	202	.91	.92	.46	131	.90	.91	.48	71	.93	.94	.42
	Peer Interactions	6	6 to 12	358	.93	.93	.61	237	.93	.93	.60	121	.93	.93	.63
	Peer Interactions	6	13 to 18	202	.94	.94	.59	131	.93	.93	.58	71	.95	.95	.60
	Family Life	7	6 to 12	358	.93	.93	.58	237	.93	.93	.53	121	.93	.93	.65
	Family Life	7	13 to 18	202	.93	.94	.56	131	.92	.93	.56	71	.95	.96	.56
DSM Symptom Scales	ADHD Inattentive Symptoms	11	6 to 12	358	.90	.90	.48	237	.91	.91	.48	121	.88	.89	.49
	ADHD Inattentive Symptoms	11	13 to 18	202	.93	.93	.39	131	.93	.93	.41	71	.94	.94	.35
	ADHD Hyperactive/Impulsive Symptoms	13	6 to 12	358	.93	.94	.45	237	.93	.93	.45	121	.94	.94	.45
	ADHD Hyperactive/Impulsive Symptoms	13	13 to 18	202	.94	.94	.45	131	.94	.94	.45	71	.94	.94	.46
	Total ADHD Symptoms	24	6 to 12	358	.93	.93	.37	237	.93	.93	.38	121	.94	.94	.36
	Total ADHD Symptoms	24	13 to 18	202	.95	.95	.31	131	.95	.95	.30	71	.95	.95	.32
	Oppositional Defiant Disorder Symptoms	10	6 to 12	358	.93	.93	.55	237	.93	.93	.52	121	.93	.93	.61
	Oppositional Defiant Disorder Symptoms	10	13 to 18	202	.95	.95	.50	131	.94	.94	.50	71	.96	.96	.50
	Conduct Disorder Symptoms	15	6 to 12	358	.94	.94	—	237	.94	.94	—	121	.92	.92	—
	Conduct Disorder Symptoms	15	13 to 18	202	.90	.90	—	131	.89	.89	—	71	.90	.90	—

Note. α = alpha; ω = omega; MIC = mean inter-item correlation. Mean inter-item correlations for DSM Conduct Disorder Symptoms could not be calculated due to sparse data for certain items.

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Table 8.5. Internal Consistency: Conners 4 Teacher ADHD Reference Samples

Scale		Number of Items	Age Group	Combined Gender				Males				Females
Scale		Number of Items	Age Group	N	α	ω	MIC	N	α	ω	MIC	N	α	ω	MIC
Content Scales	Inattention/Executive Dysfunction	20	6 to 12	188	.96	.96	.57	134	.97	.97	.57	54	.95	.95	.59
	Inattention/Executive Dysfunction	20	13 to 18	133	.97	.97	.49	93	.97	.97	.51	40	.85	.87	.43
	Hyperactivity	11	6 to 12	188	.96	.96	.55	134	.96	.96	.52	54	.96	.96	.62
	Hyperactivity	11	13 to 18	133	.96	.96	.59	93	.95	.95	.58	40	.82	.84	.61
	Impulsivity	9	6 to 12	188	.94	.94	.59	134	.94	.94	.58	54	.95	.95	.56
	Impulsivity	9	13 to 18	133	.95	.95	.56	93	.95	.95	.55	40	.96	.96	.59
	Emotional Dysregulation	8	6 to 12	188	.98	.98	.74	134	.98	.98	.76	54	.98	.98	.66
	Emotional Dysregulation	8	13 to 18	133	.98	.98	.76	93	.98	.98	.76	40	.90	.91	.74
	Depressed Mood	6	6 to 12	188	.87	.88	.50	134	.89	.89	.52	54	.82	.83	.43
	Depressed Mood	6	13 to 18	133	.91	.92	.39	93	.92	.92	.41	40	.89	.90	.30
	Anxious Thoughts	5	6 to 12	188	.90	.90	.45	134	.91	.91	.42	54	.86	.87	.51
	Anxious Thoughts	5	13 to 18	133	.87	.88	.51	93	.86	.87	.54	40	.90	.90	.43
Impairment & Functional Outcome Scales	Schoolwork	6	6 to 12	188	.92	.92	.60	134	.92	.92	.60	54	.91	.91	.58
	Schoolwork	6	13 to 18	133	.93	.93	.55	93	.93	.94	.56	40	.92	.93	.52
	Peer Interactions	6	6 to 12	188	.95	.95	.63	134	.95	.95	.64	54	.94	.94	.60
	Peer Interactions	6	13 to 18	133	.95	.95	.67	93	.95	.95	.68	40	.95	.95	.65
DSM Symptom Scales	ADHD Inattentive Symptoms	11	6 to 12	188	.94	.94	.58	134	.94	.94	.57	54	.93	.93	.61
	ADHD Inattentive Symptoms	11	13 to 18	133	.95	.96	.51	93	.95	.95	.52	40	.78	.82	.49
	ADHD Hyperactive/ Impulsive Symptoms	13	6 to 12	188	.96	.96	.54	134	.96	.96	.53	54	.97	.97	.57
	ADHD Hyperactive/ Impulsive Symptoms	13	13 to 18	133	.96	.96	.57	93	.96	.96	.57	40	.86	.88	.60
	Total ADHD Symptoms	24	6 to 12	188	.96	.96	.44	134	.96	.96	.42	54	.95	.95	.48
	Total ADHD Symptoms	24	13 to 18	133	.96	.96	.43	93	.96	.96	.44	40	.96	.96	.39
	Oppositional Defiant Disorder Symptoms	10	6 to 12	188	.97	.97	.58	134	.97	.97	.56	54	.88	.89	.59
	Oppositional Defiant Disorder Symptoms	10	13 to 18	133	.96	.96	.66	93	.95	.95	.65	40	.97	.97	.69
	Conduct Disorder Symptoms	13	6 to 12	188	.86	.87	—	134	.87	.88	—	54	.85	.86	—
	Conduct Disorder Symptoms	13	13 to 18	133	.81	.83	—	93	.81	.83	—	40	.80	.81	—

Note. α = alpha; ω = omega; MIC = mean inter-item correlation. Mean inter-item correlations for DSM Conduct Disorder Symptoms could not be calculated due to sparse data for certain items.

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Table 8.6. Internal Consistency: Conners 4 Self-Report ADHD Reference Samples

Scale		Number of Items	Age Group	Combined Gender				Males				Females
Scale		Number of Items	Age Group	N	α	ω	MIC	N	α	ω	MIC	N	α	ω	MIC
Content Scales	Inattention/Executive Dysfunction	20	8 to 12	117	.93	.93	.37	72	.93	.93	.37	45	.92	.93	.35
	Inattention/Executive Dysfunction	20	13 to 18	112	.94	.94	.34	71	.94	.94	.35	40	.93	.94	.33
	Hyperactivity	11	8 to 12	117	.87	.87	.30	72	.87	.87	.28	45	.86	.86	.34
	Hyperactivity	11	13 to 18	112	.86	.86	.31	71	.84	.85	.32	40	.89	.90	.29
	Impulsivity	9	8 to 12	117	.88	.88	.37	72	.86	.87	.36	45	.87	.88	.37
	Impulsivity	9	13 to 18	112	.87	.87	.38	71	.87	.87	.35	40	.87	.88	.36
	Emotional Dysregulation	8	8 to 12	117	.90	.90	.42	72	.89	.90	.40	45	.91	.91	.44
	Emotional Dysregulation	8	13 to 18	112	.89	.89	.45	71	.89	.89	.44	40	.89	.90	.47
	Depressed Mood	6	8 to 12	117	.90	.90	.40	72	.89	.89	.25	45	.92	.92	.49
	Depressed Mood	6	13 to 18	112	.84	.85	.47	71	.73	.76	.46	40	.90	.90	.51
	Anxious Thoughts	6	8 to 12	117	.94	.94	.49	72	.95	.95	.43	45	.91	.91	.48
	Anxious Thoughts	6	13 to 18	112	.89	.90	.60	71	.87	.88	.66	40	.88	.88	.51
Impairment & Functional Outcome Scales	Schoolwork	6	8 to 12	117	.80	.80	.29	72	.75	.76	.29	45	.85	.86	.29
	Schoolwork	6	13 to 18	112	.78	.80	.30	71	.79	.81	.25	40	.79	.80	.36
	Peer Interactions	6	8 to 12	117	.86	.86	.30	72	.86	.86	.37	45	.84	.85	.24
	Peer Interactions	6	13 to 18	112	.79	.80	.40	71	.83	.84	.42	40	.73	.73	.37
	Family Life	7	8 to 12	117	.79	.80	.27	72	.77	.79	.33	45	.81	.82	.19
	Family Life	7	13 to 18	112	.78	.79	.30	71	.82	.83	.29	40	.69	.71	.30
DSM Symptom Scales	ADHD Inattentive Symptoms	11	8 to 12	117	.86	.87	.34	72	.86	.87	.33	45	.87	.87	.35
	ADHD Inattentive Symptoms	11	13 to 18	112	.89	.89	.30	71	.88	.89	.30	40	.89	.90	.30
	ADHD Hyperactive/ Impulsive Symptoms	13	8 to 12	117	.87	.88	.26	72	.88	.88	.24	45	.87	.87	.29
	ADHD Hyperactive/ Impulsive Symptoms	13	13 to 18	112	.85	.85	.30	71	.83	.83	.31	40	.87	.88	.29
	Total ADHD Symptoms	24	8 to 12	117	.92	.92	.27	72	.92	.93	.26	45	.92	.92	.26
	Total ADHD Symptoms	24	13 to 18	112	.92	.92	.28	71	.92	.92	.29	40	.92	.92	.26
	Oppositional Defiant Disorder Symptoms	10	8 to 12	117	.87	.87	.31	72	.85	.85	.33	45	.87	.88	.28
	Oppositional Defiant Disorder Symptoms	10	13 to 18	112	.88	.88	.29	71	.89	.89	.27	40	.87	.87	.30
	Conduct Disorder Symptoms	15	8 to 12	117	.87	.88	—	72	.88	.89	—	45	.84	.85	—
	Conduct Disorder Symptoms	15	13 to 18	112	.86	.86	—	71	.81	.82	—	40	.84	.85	—

Note. α = alpha; ω = omega; MIC = mean inter-item correlation. Mean inter-item correlations for DSM Conduct Disorder Symptoms could not be calculated due to sparse data for certain items.

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Table 8.7a. Standard Error of Measurement for T-scores: Conners 4 Normative Samples Content Scales

Scale	Number of Items	Age Group	Parent			Teacher			Self-Report
Scale	Number of Items	Age Group	Combined Gender	Males	Females	Combined Gender	Males	Females	Combined Gender	Males	Females
Inattention/ Executive Dysfunction	20	6 to 7	1.71	1.90	1.78	1.37	1.53	1.55	—	—	—
		8 to 9	1.64	1.49	1.84	1.51	1.49	1.62	2.38	2.20	2.59
		10 to 11	1.80	1.85	1.74	1.43	1.45	1.48	2.48	2.44	2.48
		12 to 13	1.59	1.45	1.76	1.53	1.50	1.59	2.06	1.93	2.17
		14 to 15	1.72	1.74	1.68	1.43	1.45	1.51	2.01	1.90	2.10
		16 to 18	1.73	1.70	1.76	1.50	1.56	1.48	2.33	2.23	2.42
Hyperactivity	11	6 to 7	2.70	2.71	2.64	2.08	2.14	2.05	—	—	—
		8 to 9	2.72	2.54	2.91	2.17	2.05	2.38	3.10	2.83	3.43
		10 to 11	2.68	2.72	2.58	2.12	2.10	2.31	3.31	3.58	3.00
		12 to 13	2.68	2.53	2.86	2.42	2.45	2.36	3.00	2.73	3.40
		14 to 15	2.49	2.39	2.53	1.98	1.99	2.01	3.06	3.06	3.00
		16 to 18	2.93	2.99	2.82	2.51	2.54	2.40	3.27	3.45	3.12
Impulsivity	9	6 to 7	2.78	2.75	2.76	2.13	2.25	2.03	—	—	—
		8 to 9	2.88	2.63	3.22	2.31	2.25	2.42	3.70	3.63	3.78
		10 to 11	2.90	3.01	2.83	2.32	2.30	2.51	3.59	3.41	3.73
		12 to 13	2.72	2.66	2.79	2.30	2.40	2.19	3.66	3.71	3.53
		14 to 15	2.32	2.17	2.43	2.24	2.16	2.38	3.13	2.94	3.29
		16 to 18	2.96	3.04	2.86	2.48	2.45	2.50	3.54	3.24	3.80
Emotional Dysregulation	8	6 to 7	2.55	2.59	2.49	1.66	1.55	1.83	—	—	—
		8 to 9	2.41	2.32	2.51	1.59	1.41	1.89	3.54	3.39	3.66
		10 to 11	2.38	2.25	2.48	1.58	1.36	2.00	3.11	3.05	3.11
		12 to 13	2.16	2.15	2.17	1.80	1.62	1.95	2.92	2.81	2.93
		14 to 15	2.13	1.85	2.49	1.85	1.84	1.82	2.90	2.80	2.97
		16 to 18	2.12	2.13	2.09	2.02	1.93	2.13	3.04	2.69	3.37
Depressed Mood	6	6 to 7	2.89	3.28	2.55	2.84	2.58	3.17	—	—	—
		8 to 9	3.15	2.78	3.59	2.94	2.98	2.87	3.97	4.25	3.73
		10 to 11	3.31	3.25	3.39	2.57	2.52	2.53	3.89	4.43	3.35
		12 to 13	3.13	3.18	3.02	2.72	2.87	2.54	3.18	3.06	3.25
		14 to 15	2.54	2.41	2.64	3.01	3.06	2.92	2.93	3.10	2.68
		16 to 18	2.96	2.59	3.36	3.17	3.27	3.02	3.12	3.41	2.81
Anxious Thoughts	5 (6 for SR)	6 to 7	3.44	3.73	3.15	2.60	2.57	2.60	—	—	—
		8 to 9	3.05	2.77	3.28	3.20	3.20	3.18	3.07	2.79	3.29
		10 to 11	3.26	3.39	3.23	3.11	3.02	3.12	3.22	3.43	3.01
		12 to 13	2.86	2.63	3.06	3.72	2.93	4.32	2.84	3.04	2.67
		14 to 15	2.77	2.54	2.96	3.29	3.49	3.13	2.58	2.62	2.61
		16 to 18	3.05	3.01	3.07	3.26	3.39	3.03	2.93	3.38	2.57

Note. SR = Self-Report.

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Table 8.7b. Standard Error of Measurement for T-scores: Conners 4 Normative Samples Impairment & Functional Outcome Scales

Scale	Number of Items	Age Group	Parent			Teacher			Self-Report
Scale	Number of Items	Age Group	Combined Gender	Males	Females	Combined Gender	Males	Females	Combined Gender	Males	Females
Schoolwork	6	6 to 7	3.06	2.68	3.34	2.61	2.60	2.71	—	—	—
		8 to 9	2.95	2.80	3.29	2.41	2.39	2.50	4.14	3.79	4.51
		10 to 11	2.98	2.78	3.05	2.37	2.63	2.14	4.17	4.01	4.31
		12 to 13	2.84	2.73	3.15	2.36	2.28	2.51	3.62	3.55	3.61
		14 to 15	2.95	2.80	3.05	2.24	2.24	2.41	3.81	3.93	3.60
		16 to 18	3.43	3.17	3.72	2.48	2.48	2.66	3.82	3.87	3.75
Peer Interactions	6	6 to 7	3.47	3.57	3.34	2.41	2.51	2.23	—	—	—
		8 to 9	3.05	2.88	3.27	2.33	2.24	2.49	4.03	4.19	3.80
		10 to 11	2.83	3.20	2.59	2.26	2.25	2.26	4.32	4.31	4.24
		12 to 13	2.57	2.40	2.85	2.61	2.54	2.64	4.44	4.47	4.36
		14 to 15	2.56	2.23	2.89	3.46	3.44	3.57	4.24	4.05	4.31
		16 to 18	2.44	2.46	2.48	2.94	2.94	2.97	4.49	4.65	4.31
Family Life	7	6 to 7	2.22	2.09	2.27	—	—	—	—	—	—
		8 to 9	2.43	2.32	2.53	—	—	—	4.10	4.05	4.16
		10 to 11	2.24	2.19	2.30	—	—	—	3.52	3.57	3.42
		12 to 13	2.17	2.09	2.16	—	—	—	4.10	3.76	4.45
		14 to 15	2.16	1.90	2.39	—	—	—	3.29	3.08	3.51
		16 to 18	2.41	2.14	2.68	—	—	—	3.71	3.38	3.86

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Table 8.7c. Standard Error of Measurement for T-scores: Conners 4 Normative Samples DSM Symptom Scales

Scale	Number of Items	Age Group	Parent			Teacher			Self-Report
Scale	Number of Items	Age Group	Combined Gender	Males	Females	Combined Gender	Males	Females	Combined Gender	Males	Females
DSM ADHD Inattentive Symptoms	11	6 to 7	2.53	2.61	2.45	2.01	2.02	2.06	—	—	—
		8 to 9	2.33	2.10	2.68	2.02	2.00	2.15	3.20	2.97	3.49
		10 to 11	2.41	2.52	2.29	1.88	1.92	1.95	3.37	3.35	3.32
		12 to 13	2.18	2.01	2.39	1.97	1.94	2.07	2.85	2.66	3.03
		14 to 15	2.33	2.38	2.26	1.89	1.89	2.04	2.71	2.57	2.83
		16 to 18	2.35	2.34	2.38	1.92	1.99	1.96	3.06	3.00	3.13
DSM ADHD Hyperactive/Impulsive Symptoms	13	6 to 7	2.47	2.51	2.41	1.85	1.93	1.80	—	—	—
		8 to 9	2.53	2.33	2.77	2.00	1.94	2.11	3.02	2.83	3.24
		10 to 11	2.58	2.59	2.51	1.96	1.94	2.17	3.23	3.48	2.95
		12 to 13	2.49	2.44	2.54	2.17	2.30	1.98	3.22	2.92	3.60
		14 to 15	2.19	2.16	2.19	1.84	1.83	1.95	3.01	2.95	3.03
		16 to 18	2.84	2.84	2.79	2.24	2.29	2.16	3.39	3.42	3.39
DSM Total ADHD Symptoms	24	6 to 7	1.89	1.92	1.84	1.52	1.55	1.55	—	—	—
		8 to 9	1.91	1.74	2.18	1.70	1.70	1.78	2.33	2.14	2.58
		10 to 11	2.02	2.14	1.89	1.59	1.61	1.72	2.53	2.58	2.44
		12 to 13	1.85	1.77	1.97	1.67	1.77	1.59	2.33	2.17	2.52
		14 to 15	1.85	1.86	1.80	1.56	1.61	1.61	2.19	2.13	2.22
		16 to 18	2.07	2.06	2.07	1.80	1.86	1.82	2.48	2.49	2.48
DSM Oppositional Defiant Disorder Symptoms	10	6 to 7	2.34	2.21	2.45	1.71	1.78	1.64	—	—	—
		8 to 9	2.31	2.17	2.51	1.82	1.94	1.72	3.22	3.15	3.35
		10 to 11	2.34	2.34	2.31	1.51	1.41	1.76	3.00	2.95	3.02
		12 to 13	1.98	2.00	2.02	1.72	1.85	1.55	2.87	2.72	2.98
		14 to 15	2.18	2.02	2.33	2.00	2.02	1.98	2.85	2.73	2.91
		16 to 18	2.23	2.10	2.38	1.97	2.03	1.94	3.15	2.88	3.46
DSM Conduct Disorder Symptoms	15	6 to 7	2.00	4.54	2.05	2.18	2.25	3.22	—	—	—
		8 to 9	1.74	2.34	2.03	2.18	3.47	2.72	2.73	3.19	2.83
		10 to 11	1.75	2.54	2.00	1.84	1.77	3.80	2.46	3.72	2.35
		12 to 13	1.96	3.00	2.37	1.83	2.89	1.72	2.64	3.70	2.96
		14 to 15	1.62	3.54	1.47	2.06	3.23	2.27	2.10	3.23	4.81
		16 to 18	2.11	3.23	4.32	1.90	2.05	3.27	2.17	3.04	3.44

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Table 8.8. Standard Error of Measurement for T-scores: Conners 4 ADHD Reference Samples

Scale		Number of Items	Age Group	Parent			Teacher			Self-Report
Scale		Number of Items	Age Group	Combined Gender	Males	Females	Combined Gender	Males	Females	Combined Gender	Males	Females
Content Scales	Inattention/Executive Dysfunction	20	6 to 12	2.33	2.24	2.48	1.91	1.82	2.14	2.65	2.62	2.66
	Inattention/Executive Dysfunction	20	13 to 18	1.97	2.00	1.86	1.59	1.60	3.64	2.48	2.46	2.53
	Hyperactivity	11	6 to 12	2.62	2.60	2.65	2.04	2.06	1.95	3.65	3.56	3.70
	Hyperactivity	11	13 to 18	2.69	2.75	2.44	2.09	2.26	3.98	3.68	3.91	3.21
	Impulsivity	9	6 to 12	2.93	3.04	2.70	2.41	2.44	2.20	3.43	3.67	3.48
	Impulsivity	9	13 to 18	2.57	2.52	2.64	2.15	2.19	2.00	3.57	3.60	3.49
	Emotional Dysregulation	8	6 to 12	2.35	2.35	2.34	1.48	1.47	1.46	3.13	3.24	2.98
	Emotional Dysregulation	8	13 to 18	1.93	2.04	1.60	1.46	1.40	2.97	3.26	3.28	3.09
	Depressed Mood	6	6 to 12	3.23	3.33	3.02	3.50	3.28	4.18	3.13	3.25	2.77
	Depressed Mood	6	13 to 18	3.05	2.94	3.23	2.87	2.75	3.17	3.84	4.91	3.16
	Anxious Thoughts	5 (6 for SR)	6 to 12	3.12	3.26	2.82	3.15	2.94	3.65	2.49	2.19	2.95
	Anxious Thoughts	5 (6 for SR)	13 to 18	3.01	2.96	3.12	3.48	3.60	3.13	3.23	3.46	3.40
Impairment & Functional Outcome Scales	Schoolwork	6	6 to 12	3.42	3.26	3.74	2.86	2.76	2.98	4.46	4.89	3.71
	Schoolwork	6	13 to 18	2.79	2.96	2.44	2.60	2.55	2.72	4.47	4.39	4.45
	Peer Interactions	6	6 to 12	2.65	2.66	2.55	2.26	2.19	2.36	3.77	3.68	3.84
	Peer Interactions	6	13 to 18	2.50	2.57	2.24	2.30	2.30	2.30	4.52	3.99	5.17
	Family Life	7	6 to 12	2.61	2.63	2.56	—	—	—	4.43	4.59	4.22
	Family Life	7	13 to 18	2.49	2.71	2.10	—	—	—	4.55	4.12	5.34
DSM Symptom Scales	ADHD Inattentive Symptoms	11	6 to 12	3.13	3.01	3.37	2.44	2.37	2.56	3.64	3.67	3.56
	ADHD Inattentive Symptoms	11	13 to 18	2.61	2.61	2.50	2.12	2.17	4.23	3.30	3.35	3.22
	ADHD Hyperactive/Impulsive Symptoms	13	6 to 12	2.54	2.57	2.47	1.95	1.96	1.81	3.53	3.50	3.62
	ADHD Hyperactive/Impulsive Symptoms	13	13 to 18	2.53	2.54	2.45	1.96	2.09	3.49	3.89	4.13	3.50
	Total ADHD Symptoms	24	6 to 12	2.63	2.67	2.50	2.01	1.94	2.19	2.78	2.73	2.82
	Total ADHD Symptoms	24	13 to 18	2.27	2.23	2.28	1.90	2.01	1.95	2.84	2.88	2.82
	Oppositional Defiant Disorder Symptoms	10	6 to 12	2.59	2.59	2.55	1.73	1.78	3.27	3.59	3.81	3.46
	Oppositional Defiant Disorder Symptoms	10	13 to 18	2.25	2.42	1.93	2.02	2.12	1.72	3.48	3.30	3.57
	Conduct Disorder Symptoms	15	6 to 12	2.39	2.45	2.86	3.67	3.41	3.71	3.50	3.34	3.90
	Conduct Disorder Symptoms	15	13 to 18	3.11	3.27	3.19	4.18	4.17	4.33	3.72	4.22	3.83

Note. SR = Self-Report. Age Group intervals are 6 to 12 years and 13 to 18 years for Parent and Teacher, and 8 to 12 years and 13 to 18 years for Self-Report.

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Table 8.9. Test-Retest Reliability: Conners 4 Parent

Scale		Obtained r	Corrected r	Time 1			Time 2
Scale		Obtained r	Corrected r	M	Mdn	SD	M	Mdn	SD
Content Scales	Inattention/Executive Dysfunction	.90	.95	47.1	46	8.2	45.9	44	8.3
	Hyperactivity	.84	.92	48.3	47	8.0	46.7	45	8.3
	Impulsivity	.85	.90	48.2	47	8.1	47.7	45	9.5
	Emotional Dysregulation	.82	.94	48.9	47	7.9	47.3	45	6.8
	Depressed Mood	.69	.83	48.4	47	8.1	48.2	46	7.9
	Anxious Thoughts	.64	.88	47.5	44	6.2	47.8	44	7.3
Impairment & Functional Outcome Scales	Schoolwork	.86	.96	46.4	44	7.5	46.2	45	6.4
	Peer Interactions	.94	.98	47.4	45	7.6	47.2	45	7.6
	Family Life	.79	.91	48.4	46	7.0	47.5	45	8.0
DSM Symptom Scales	ADHD Inattentive Symptoms	.89	.94	47.0	45	8.2	46.3	45	8.4
	ADHD Hyperactive/Impulsive Symptoms	.88	.94	48.1	47	7.7	46.9	45	8.7
	Total ADHD Symptoms	.91	.96	47.5	46	7.8	46.4	45	8.6
	Oppositional Defiant Disorder Symptoms	.82	.91	48.2	45	8.5	46.9	45	7.8
	Conduct Disorder Symptoms	.78	.99	47.5	45	4.6	47.2	45	4.0

Note. N = 81. All correlations significant, p < .001. Guidelines for interpreting |r|: very weak < .20, weak = .20 to .39, moderate = .40 to .59, strong = .60 to .79, very strong ≥ .80.

Click to expand

Table 8.10. Test-Retest Reliability: Conners 4 Teacher

Scale		Obtained r	Corrected r	Time 1			Time 2
Scale		Obtained r	Corrected r	M	Mdn	SD	M	Mdn	SD
Content Scales	Inattention/Executive Dysfunction	.88	.89	49.4	48	9.5	49.3	46	9.9
	Hyperactivity	.91	.91	50.1	49	9.8	49.1	46	10.4
	Impulsivity	.85	.81	50.1	48	10.4	49.8	45	11.4
	Emotional Dysregulation	.90	.92	48.4	45	8.5	49.3	44	10.7
	Depressed Mood	.77	.88	49.0	46	8.4	48.0	45	7.9
	Anxious Thoughts	.81	.83	49.4	47	9.7	48.6	44	9.4
Impairment & Functional Outcome Scales	Schoolwork	.90	.89	50.4	47	10.8	49.7	47	10.0
Impairment & Functional Outcome Scales	Peer Interactions	.92	.93	48.8	44	9.7	48.9	46	9.8
DSM Symptom Scales	ADHD Inattentive Symptoms	.86	.86	49.5	48	10.0	49.6	47	10.1
	ADHD Hyperactive/Impulsive Symptoms	.92	.91	50.0	47	10.0	49.3	46	10.5
	Total ADHD Symptoms	.91	.90	49.8	47	10.0	49.5	45	10.4
	Oppositional Defiant Disorder Symptoms	.90	.91	48.9	45	9.3	49.2	44	10.5
	Conduct Disorder Symptoms	.84	.97	47.6	45	5.7	48.0	45	6.9

Note. N = 61. All correlations significant, p < .001. Guidelines for interpreting |r|: very weak < .20, weak = .20 to .39, moderate = .40 to .59, strong = .60 to .79, very strong ≥ .80.

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Table 8.11. Test-Retest Reliability: Conners 4 Self-Report

Scale		Obtained r	Corrected r	Time 1			Time 2
Scale		Obtained r	Corrected r	M	Mdn	SD	M	Mdn	SD
Content Scales	Inattention/ Executive Dysfunction	.62	.71	48.4	48	8.2	48.0	47	9.7
	Hyperactivity	.76	.78	49.7	50	9.8	47.5	45	9.5
	Impulsivity	.63	.73	49.3	47	9.3	47.1	46	8.1
	Emotional Dysregulation	.67	.79	49.3	47	8.7	47.8	47	8.2
	Depressed Mood	.71	.76	49.5	47	9.7	47.2	44	9.0
	Anxious Thoughts	.75	.76	49.7	46	10.4	48.6	45	9.4
Impairment & Functional Outcome Scales	Schoolwork	.68	.73	48.8	48	8.8	48.1	47	9.8
	Peer Interactions	.70	.72	48.5	45	9.6	48.6	45	9.8
	Family Life	.71	.86	49.2	48	8.3	48.0	48	7.1
DSM Symptom Scales	ADHD Inattentive Symptoms	.57	.63	49.0	48	9.0	48.1	47	9.5
	ADHD Hyperactive/Impulsive Symptoms	.76	.81	49.3	48	9.7	47.2	46	8.8
	Total ADHD Symptoms	.69	.76	49.1	48	9.1	47.5	47	8.8
	Oppositional Defiant Disorder Symptoms	.53	.73	49.5	48	8.5	47.2	46	6.8
	Conduct Disorder Symptoms	.55	.70	49.0	46	8.7	48.9	46	7.7

Note. N = 68. All correlations significant, p < .001. Guidelines for interpreting |r|: very weak < .20, weak = .20 to .39, moderate = .40 to .59, strong = .60 to .79, very strong ≥ .80.

Click to expand

Table 8.12. Difference Between Time 1 and Time 2 T-scores: Conners 4 Parent

Scale		Percentage of Test-Retest Sample			M Differences	SD Differences
Scale		Time 1 ≥ 1 SD higher than Time 2	Scores differed by less than 1 SD	Time 2 ≥ 1 SD higher than Time 1	M Differences	SD Differences
Content Scales	Inattention/Executive Dysfunction	1.2	97.5	1.2	−1.1	0.1
	Hyperactivity	3.7	95.1	1.2	−1.6	0.3
	Impulsivity	2.5	92.6	4.9	−0.5	1.4
	Emotional Dysregulation	4.9	93.8	1.2	−1.6	−1.0
	Depressed Mood	3.7	92.6	3.7	−0.2	−0.2
	Anxious Thoughts	2.5	92.6	4.9	0.3	1.1
Impairment & Functional Outcome Scales	Schoolwork	2.5	97.5	0.0	−0.2	−1.0
	Peer Interactions	1.2	98.8	0.0	−0.2	0.0
	Family Life	3.7	95.1	1.2	−0.9	1.0
DSM Symptom Scales	ADHD Inattentive Symptoms	2.5	96.3	1.2	−0.8	0.2
	ADHD Hyperactive/Impulsive Symptoms	1.2	96.3	2.5	−1.2	1.0
	Total ADHD Symptoms	1.2	98.8	0.0	−1.1	0.8
	Oppositional Defiant Disorder Symptoms	3.7	92.6	3.7	−1.3	−0.7
	Conduct Disorder Symptoms	1.2	97.5	1.2	−0.4	−0.6

Note. N = 81. 1 SD is equivalent to 10 T-score points. A positive M difference indicates that the parent’s ratings were higher at Time 2 than at Time 1.

Click to expand

Table 8.13. Difference Between Time 1 and Time 2 T-scores: Conners 4 Teacher

Scale		Percentage of Test-Retest Sample			M Differences	SD Differences
Scale		Time 1 ≥ 1 SD higher than Time 2	Scores differed by less than 1 SD	Time 2 ≥ 1 SD higher than Time 1	M Differences	SD Differences
Content Scales	Inattention/Executive Dysfunction	3.3	95.1	1.6	−0.1	0.4
	Hyperactivity	3.3	96.7	0.0	−1.0	0.6
	Impulsivity	4.9	91.8	3.3	−0.4	1.1
	Emotional Dysregulation	3.3	91.8	4.9	1.0	2.2
	Depressed Mood	4.9	93.4	1.6	−1.0	−0.5
	Anxious Thoughts	9.8	86.9	3.3	−0.7	−0.3
Impairment & Functional Outcome Scales	Schoolwork	3.3	95.1	1.6	−0.7	−0.8
Impairment & Functional Outcome Scales	Peer Interactions	1.6	96.7	1.6	0.0	0.0
DSM Symptom Scales	ADHD Inattentive Symptoms	3.3	95.1	1.6	0.1	0.1
	ADHD Hyperactive/Impulsive Symptoms	0.0	96.7	3.3	−0.7	0.5
	Total ADHD Symptoms	3.3	95.1	1.6	−0.3	0.5
	Oppositional Defiant Disorder Symptoms	1.6	96.7	1.6	0.3	1.2
	Conduct Disorder Symptoms	0.0	95.1	4.9	0.3	1.2

Note. N = 61. 1 SD is equivalent to 10 T-score points. A positive M difference indicates that the teacher’s ratings were higher at Time 2 than at Time 1.

Click to expand

Table 8.14. Difference Between Time 1 and Time 2 T-scores: Conners 4 Self-Report

Scale		Percentage of Test-Retest Sample			M Differences	SD Differences
Scale		Time 1 ≥ 1 SD higher than Time 2	Scores differed by less than 1 SD	Time 2 ≥ 1 SD higher than Time 1	M Differences	SD Differences
Content Scales	Inattention/Executive Dysfunction	8.8	79.4	11.8	−0.5	1.4
	Hyperactivity	10.3	86.8	2.9	−2.2	−0.3
	Impulsivity	13.2	79.4	7.4	−2.2	−1.2
	Emotional Dysregulation	10.3	83.8	5.9	−1.5	−0.5
	Depressed Mood	11.8	83.8	4.4	−2.3	−0.7
	Anxious Thoughts	10.3	83.8	5.9	−1.1	−1.1
Impairment & Functional Outcome Scales	Schoolwork	10.3	77.9	11.8	−0.6	0.9
	Peer Interactions	7.4	80.9	11.8	0.1	0.2
	Family Life	8.8	91.2	0.0	−1.2	−1.2
DSM Symptom Scales	ADHD Inattentive Symptoms	8.8	77.9	13.2	−0.9	0.6
	ADHD Hyperactive/Impulsive Symptoms	10.3	83.8	5.9	−2.1	−0.9
	Total ADHD Symptoms	11.8	80.9	7.4	−1.6	−0.3
	Oppositional Defiant Disorder Symptoms	16.2	76.5	7.4	−2.4	−1.7
	Conduct Disorder Symptoms	10.3	82.4	7.4	−0.1	−1.0

Note. N = 68. 1 SD is equivalent to 10 T-score points. A positive M difference indicates that the youth’s self-report ratings were higher at Time 2 than at Time 1.

Click to expand

Table 8.15. Inter-Rater Reliability Study 1: Conners 4 Parent

Scale		Obtained r	Corrected r	p	Parent 1			Parent 2
Scale		Obtained r	Corrected r	p	M	Mdn	SD	M	Mdn	SD
Content Scales	Inattention/Executive Dysfunction	.82	.84	< .001	53.3	51	10.8	53.5	50	11.9
	Hyperactivity	.84	.86	< .001	51.9	49	10.7	50.8	48	10.0
	Impulsivity	.75	.85	< .001	51.3	49	9.0	51.9	49	11.3
	Emotional Dysregulation	.76	.78	< .001	51.4	49	9.9	52.8	49	12.0
	Depressed Mood	.68	.79	< .001	50.4	47	9.1	51.3	48	8.8
	Anxious Thoughts	.78	.58	< .001	52.0	47	11.5	51.6	48	10.9
Impairment & Functional Outcome Scales	Schoolwork	.88	.81	< .001	51.5	50	10.8	51.7	47	11.7
	Peer Interactions	.91	.93	< .001	50.8	48	9.7	51.4	48	9.9
	Family Life	.86	.69	< .001	52.4	48	11.3	52.5	48	12.0
DSM Symptom Scales	ADHD Inattentive Symptoms	.82	.84	< .001	53.3	51	10.3	53.2	49	11.7
	ADHD Hyperactive/Impulsive Symptoms	.83	.91	< .001	51.8	50	9.9	51.4	48	10.2
	Total ADHD Symptoms	.84	.89	< .001	52.7	51	10.3	52.5	49	10.9
	Oppositional Defiant Disorder Symptoms	.80	.82	< .001	51.4	50	9.5	51.9	49	10.8
	Conduct Disorder Symptoms	.68	.93	< .001	49.4	47	7.9	48.7	45	6.2

Note. N = 68. Reported p-values are for corrected r. Guidelines for interpreting |r| : very weak < .20, weak = .20 to .39, moderate = .40 to .59, strong = .60 to .79, very strong ≥ .80.

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Table 8.16. Inter-Rater Reliability Study 1: Conners 4 Teacher

Scale		Obtained r	Corrected r	p	Teacher 1			Teacher 2
Scale		Obtained r	Corrected r	p	M	Mdn	SD	M	Mdn	SD
Content Scales	Inattention/Executive Dysfunction	.54	.54	.001	61.1	63	10.1	59.7	61	9.9
	Hyperactivity	.65	.52	.001	56.2	56	12.6	55.5	53	11.0
	Impulsivity	.57	.48	.004	56.7	56	11.8	55.8	54	10.9
	Emotional Dysregulation	.79	.50	.003	57.3	50	14.7	57.3	50	15.2
	Depressed Mood	.64	.58	< .001	53.1	50	10.8	52.0	48	10.6
	Anxious Thoughts	.68	.49	.004	55.0	52	13.0	52.1	47	12.9
Impairment & Functional Outcome Scales	Schoolwork	.31	.38	.028	61.0	59	9.5	57.7	57	8.4
Impairment & Functional Outcome Scales	Peer Interactions	.66	.59	<.001	62.2	62	11.2	60.9	56	10.7
DSM Symptom Scales	ADHD Inattentive Symptoms	.51	.52	.002	61.7	64	10.1	60.1	61	9.7
	ADHD Hyperactive/Impulsive Symptoms	.65	.55	.001	56.5	55	12.1	55.9	54	10.7
	Total ADHD Symptoms	.60	.57	< .001	59.7	58	11.0	58.5	58	9.7
	Oppositional Defiant Disorder Symptoms	.69	.48	.004	56.7	51	13.7	54.8	50	12.7
	Conduct Disorder Symptoms	.76	.69	< .001	53.4	48	11.3	53.2	49	11.1

Note. N = 34. Reported p-values are for corrected r. Guidelines for interpreting |r|: very weak < .20, weak = .20 to .39, moderate = .40 to .59, strong = .60 to .79, very strong ≥ .80.

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Table 8.17. Difference Between Rater T-scores Study 1: Conners 4 Parent

Scale		Percentage of Inter-Rater Sample			Absolute M Differences	Absolute SD Differences
Scale		Parent 1 ≥ 1 SD higher than Parent 2	Scores differed by less than 1 SD	Parent 2 ≥ 1 SD higher than Parent 1	Absolute M Differences	Absolute SD Differences
Content Scales	Inattention/Executive Dysfunction	2.9	91.2	5.9	0.3	1.1
	Hyperactivity	1.5	92.6	5.9	1.0	0.7
	Impulsivity	8.8	85.3	5.9	0.6	2.3
	Emotional Dysregulation	14.7	79.4	5.9	1.4	2.1
	Depressed Mood	10.3	86.8	2.9	1.0	0.3
	Anxious Thoughts	8.8	80.9	10.3	0.3	0.6
Impairment & Functional Outcome Scales	Schoolwork	2.9	89.7	7.4	0.2	0.9
	Peer Interactions	0.0	100.0	0.0	0.6	0.3
	Family Life	2.9	89.7	7.4	0.1	0.8
DSM Symptom Scales	ADHD Inattentive Symptoms	7.4	88.2	4.4	0.1	1.4
	ADHD Hyperactive/Impulsive Symptoms	4.4	91.2	4.4	0.4	0.3
	Total ADHD Symptoms	4.4	91.2	4.4	0.2	0.6
	Oppositional Defiant Disorder Symptoms	10.3	85.3	4.4	0.6	1.3
	Conduct Disorder Symptoms	2.9	91.2	5.9	0.7	1.7

Note. N = 68. 1 SD is equivalent to 10 T-score points.

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Table 8.18. Difference Between Rater T-scores Study 1: Conners 4 Teacher

Scale		Percentage of Inter-Rater Sample			Absolute M Differences	Absolute SD Differences
Scale		Teacher 1 ≥ 1 SD higher than Teacher 2	Scores differed by less than 1 SD	Teacher 2 ≥ 1 SD higher than Teacher 1	Absolute M Differences	Absolute SD Differences
Content Scales	Inattention/Executive Dysfunction	5.9	79.4	14.7	1.1	0.1
	Hyperactivity	11.8	76.5	11.8	1.6	0.3
	Impulsivity	14.7	61.8	23.5	0.5	1.4
	Emotional Dysregulation	14.7	64.7	20.6	1.6	1.0
	Depressed Mood	5.9	79.4	14.7	0.2	0.2
	Anxious Thoughts	8.8	76.5	14.7	0.3	1.1
Impairment & Functional Outcome Scales	Schoolwork	8.8	70.6	20.6	0.2	1.0
Impairment & Functional Outcome Scales	Peer Interactions	14.7	70.6	14.7	0.2	0.0
DSM Symptom Scales	ADHD Inattentive Symptoms	11.8	61.8	26.5	0.8	0.2
	ADHD Hyperactive/Impulsive Symptoms	14.7	64.7	20.6	1.2	1.0
	Total ADHD Symptoms	17.6	64.7	17.6	1.1	0.8
	Oppositional Defiant Disorder Symptoms	5.9	82.4	11.8	1.3	0.7
	Conduct Disorder Symptoms	11.8	64.7	23.5	0.4	0.6

Note. N = 34. 1 SD is equivalent to 10 T-score points.

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Table 8.19 Inter-Rater Reliability Study 2: Conners 4 Parent/Teacher

Scale		Obtained r	Corrected r	p	Parent			Teacher
Scale		Obtained r	Corrected r	p	M	Mdn	SD	M	Mdn	SD
Content Scales	Inattention/Executive Dysfunction	.54	.51	< .001	63.5	64	10.5	59.3	60	10.2
	Hyperactivity	.47	.40	.002	59.0	57	12.4	53.8	52	10.0
	Impulsivity	.62	.54	< .001	59.8	60	12.6	54.1	53	9.8
	Emotional Dysregulation	.51	.40	.002	56.0	53	12.5	52.9	48	11.0
	Depressed Mood	.40	.36	.005	56.8	55	10.8	54.8	51	10.5
	Anxious Thoughts	.52	.28	.030	58.6	53	15.4	57.7	56	13.5
Impairment & Functional Outcome Scales	Schoolwork	.58	.48	< .001	62.2	61	11.2	58.2	59	11.7
Impairment & Functional Outcome Scales	Peer Interactions	.60	.45	< .001	57.3	55	13.2	54.7	54	11.2
DSM Symptom Scales	ADHD Inattentive Symptoms	.51	.48	< .001	63.4	64	10.3	59.0	59	10.4
	ADHD Hyperactive/Impulsive Symptoms	.53	.43	.001	59.7	58	12.8	53.8	53	10.2
	Total ADHD Symptoms	.51	.46	< .001	62.6	63	11.5	56.8	57	10.0
	Oppositional Defiant Disorder Symptoms	.50	.44	< .001	55.1	52	12.1	52.2	47	9.9
	Conduct Disorder Symptoms	.53	.79	< .001	50.4	48	7.8	49.0	45	6.3

Note. N = 62. Reported p-values are for corrected r. Guidelines for interpreting |r|: very weak < .20, weak = .20 to .39, moderate = .40 to .59, strong = .60 to .79, very strong ≥ .80.

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Table 8.20. Inter-Rater Reliability Study 2: Conners 4 Parent/Self-Report

Scale		Obtained r	Corrected r	p	Parent			Self-Report
Scale		Obtained r	Corrected r	p	M	Mdn	SD	M	Mdn	SD
Content Scales	Inattention/Executive Dysfunction	.19	.19	.147	63.5	64	10.5	60.0	59	9.4
	Hyperactivity	.50	.40	.002	59.0	57	12.4	58.7	58	10.7
	Impulsivity	.23	.16	.209	59.8	60	12.6	56.1	54	11.2
	Emotional Dysregulation	.38	.30	.018	56.0	53	12.5	54.2	53	10.2
	Depressed Mood	.39	.35	.007	56.8	55	10.8	54.8	52	10.7
	Anxious Thoughts	.34	.20	.122	58.6	53	15.4	55.3	52	11.3
Impairment & Functional Outcome Scales	Schoolwork	.23	.20	.121	62.2	61	11.2	57.5	56	10.3
	Peer Interactions	.18	.12	.372	57.3	55	13.2	56.9	55	11.6
	Family Life	.23	.23	.081	56.5	51	12.8	53.3	52	7.9
DSM Symptom Scales	ADHD Inattentive Symptoms	.23	.23	.081	63.4	64	10.3	59.3	58	9.8
	ADHD Hyperactive/Impulsive Symptoms	.44	.35	.006	59.7	58	12.8	58.6	58	10.2
	Total ADHD Symptoms	.36	.32	.011	62.6	63	11.5	59.6	58	9.8
	Oppositional Defiant Disorder Symptoms	.53	.52	< .001	55.1	52	12.1	52.9	51	8.5
	Conduct Disorder Symptoms	.44	.72	< .001	50.4	48	7.8	47.8	46	6.1

Note. N = 62. Reported p-values are for corrected r. Guidelines for interpreting |r|: very weak < .20, weak = .20 to .39, moderate = .40 to .59, strong = .60 to .79, very strong ≥ .80.

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Table 8.21. Inter-Rater Reliability Study 2: Conners 4 Teacher/Self-Report

Scale		Obtained r	Corrected r	p	Teacher			Self-Report
Scale		Obtained r	Corrected r	p	M	Mdn	SD	M	Mdn	SD
Content Scales	Inattention/Executive Dysfunction	.21	.22	.094	59.3	60	10.2	60.0	59	9.4
	Hyperactivity	.32	.30	.021	53.8	52	10.0	58.7	58	10.7
	Impulsivity	.13	.11	.383	54.1	53	9.8	56.1	54	11.2
	Emotional Dysregulation	.22	.20	.125	52.9	48	11.0	54.2	53	10.2
	Depressed Mood	.41	.37	.003	54.8	51	10.5	54.8	52	10.7
	Anxious Thoughts	.51	.36	.005	57.7	56	13.5	55.3	52	11.3
Impairment & Functional Outcome Scales	Schoolwork	.28	.23	.072	58.2	59	11.7	57.5	56	10.3
Impairment & Functional Outcome Scales	Peer Interactions	.21	.16	.209	54.7	54	11.2	56.9	55	11.6
DSM Symptom Scales	ADHD Inattentive Symptoms	.21	.21	.107	59.0	59	10.4	59.3	58	9.8
	ADHD Hyperactive/Impulsive Symptoms	.27	.26	.047	53.8	53	10.2	58.6	58	10.2
	Total ADHD Symptoms	.22	.23	.082	56.8	57	10.0	59.6	58	9.8
	Oppositional Defiant Disorder Symptoms	.39	.45	< .001	52.2	47	9.9	52.9	51	8.5
	Conduct Disorder Symptoms	.28	.61	< .001	49.0	45	6.3	47.8	46	6.1

Note. N = 62. Reported p-values are for corrected r. Guidelines for interpreting |r|: very weak < .20, weak = .20 to .39, moderate = .40 to .59, strong = .60 to .79, very strong ≥ .80.

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Table 8.22. Difference Between Rater T-scores Study 2: Conners 4 Parent/Teacher

Scale		Percentage of Inter-Rater Sample			M Differences	SD Differences
Scale		Teacher ≥ 1 SD higher than Parent	Scores differed by less than 1 SD	Parent ≥ 1 SD higher than Teacher	M Differences	SD Differences
Content Scales	Inattention/Executive Dysfunction	6.5	75.8	17.7	−4.2	−0.3
	Hyperactivity	4.8	64.5	30.6	−5.2	−2.4
	Impulsivity	1.6	75.8	22.6	−5.7	−2.7
	Emotional Dysregulation	11.3	64.5	24.2	−3.0	−1.5
	Depressed Mood	11.3	66.1	22.6	−2.0	−0.2
	Anxious Thoughts	14.5	61.3	24.2	−0.8	−1.9
Impairment & Functional Outcome Scales	Schoolwork	11.3	58.1	30.6	−4.0	0.5
Impairment & Functional Outcome Scales	Peer Interactions	4.8	71.0	24.2	−2.7	−2.0
DSM Symptom Scales	ADHD Inattentive Symptoms	6.5	64.5	29.0	−4.4	0.1
	ADHD Hyperactive/Impulsive Symptoms	3.2	66.1	30.6	−5.9	−2.5
	Total ADHD Symptoms	3.2	66.1	30.6	−5.8	−1.5
	Oppositional Defiant Disorder Symptoms	6.5	87.1	6.5	−3.0	−2.2
	Conduct Disorder Symptoms	11.3	67.7	21.0	−1.4	−1.5

Note. N =62. 1 SD is equivalent to 10 T-score points. A positive M difference indicates that the teacher’s ratings are higher than the parent’s ratings.

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Table 8.23. Difference Between Rater T-scores Study 2 : Conners 4 Parent/Self-Report

Scale		Percentage of Inter-Rater Sample			M Differences	SD Differences
Scale		Self-Report ≥ 1 SD higher than Parent	Scores differed by less than 1 SD	Parent ≥ 1 SD higher than Self-Report	M Differences	SD Differences
Content Scales	Inattention/Executive Dysfunction	14.5	53.2	32.3	−3.5	−1.1
	Hyperactivity	17.7	66.1	16.1	−0.2	−1.7
	Impulsivity	14.5	53.2	32.3	−3.7	−1.4
	Emotional Dysregulation	17.7	58.1	24.2	−1.8	−2.2
	Depressed Mood	11.3	64.5	24.2	−2.0	−0.1
	Anxious Thoughts	14.5	51.6	33.9	−3.3	−4.1
Impairment & Functional Outcome Scales	Schoolwork	8.1	56.5	35.5	−4.6	−0.9
	Peer Interactions	27.4	51.6	21.0	−0.4	−1.6
	Family Life	12.9	62.9	24.2	−3.3	−4.9
DSM Symptom Scales	ADHD Inattentive Symptoms	14.5	51.6	33.9	−4.1	−0.5
	ADHD Hyperactive/Impulsive Symptoms	16.1	59.7	24.2	−1.1	−2.5
	Total ADHD Symptoms	8.1	64.5	27.4	−3.0	−1.7
	Oppositional Defiant Disorder Symptoms	1.6	87.1	11.3	−2.2	−3.6
	Conduct Disorder Symptoms	9.7	72.6	17.7	−2.6	−1.7

Note. N = 62. 1 SD is equivalent to 10 T-score points. A positive M difference indicates that the youth’s self-report ratings are higher than the parent’s ratings.

Click to expand

Table 8.24. Difference Between Rater T-scores Study 2: Conners 4 Teacher/Self-Report

Scale		Percentage of Inter-Rater Sample			M Differences	SD Differences
Scale		Self-Report ≥ 1 SD higher than Teacher	Scores differed by less than 1 SD	Teacher ≥ 1 SD higher than Self-Report	M Differences	SD Differences
Content Scales	Inattention/Executive Dysfunction	22.6	58.1	19.4	0.7	−0.8
	Hyperactivity	6.5	58.1	35.5	5.0	0.7
	Impulsivity	21.0	51.6	27.4	1.9	1.4
	Emotional Dysregulation	17.7	54.8	27.4	1.2	−0.7
	Depressed Mood	19.4	59.7	21.0	0.0	0.2
	Anxious Thoughts	25.8	61.3	12.9	−2.4	−2.2
Impairment & Functional Outcome Scales	Schoolwork	29.0	58.1	12.9	−0.6	−1.4
Impairment & Functional Outcome Scales	Peer Interactions	17.7	51.6	30.6	2.2	0.4
DSM Symptom Scales	ADHD Inattentive Symptoms	22.6	56.5	21.0	0.4	−0.6
	ADHD Hyperactive/Impulsive Symptoms	11.3	56.5	32.3	4.8	0.0
	Total ADHD Symptoms	11.3	64.5	24.2	2.8	−0.2
	Oppositional Defiant Disorder Symptoms	9.7	87.1	3.2	0.8	−1.4
	Conduct Disorder Symptoms	12.9	69.4	17.7	−1.2	−0.2

Note. N = 62. 1 SD is equivalent to 10 T-score points. A positive M difference indicates that the youth’s self-report ratings are higher than the teacher’s ratings.

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Table 8.25. Endorsement of Critical Items & Indicator Items by Rater Type

Item Stem		Parent (%)	Teacher (%)	Self-Report (%)
Self-Harm Critical Items	Harming self deliberately	8.1	1.6	19.4
	Talking about suicide	8.1	4.8	—
	Planning or attempting suicide	4.8	3.2	14.5
	Thinking about harming self	—	—	29.0
Sleep Problems Indicator	Having trouble sleeping	35.5	—	40.3
Sleep Problems Indicator	Appearing/Feeling tired	6.5	8.1	21.0

Note. Self-Harm Critical Items are considered endorsed with an item response of ≥ 1, while Sleep Problems Indicator items are considered endorsed with an item response of ≥ 2 for trouble sleeping, an item response of ≥ 2 for tiredness for Parent and Teacher, and an item response of 3 for tiredness for Self-Report.