Conners 4 Manual

Appendix E: Calculating Statistical Difference in Scores, Tables

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Table E.1. Conners 4 Minimum Values Needed for Significance When Comparing Pre-test to Post-test T-scores: 95% Reliable Change Index (RCI)

Scale		Parent	Teacher	Self-Report
Content Scales	Inattention/Executive Dysfunction	7	10	16
	Hyperactivity	9	9	13
	Impulsivity	9	13	15
	Emotional Dysregulation	7	9	13
	Depressed Mood	12	10	14
	Anxious Thoughts	10	12	14
Impairment & Functional Outcome Scales	Schoolwork	6	10	15
	Peer Interactions	5	8	15
	Family Life	9	—	11
DSM Symptom Scales	ADHD Inattentive Symptoms	7	11	17
	ADHD Hyperactive/Impulsive Symptoms	7	9	13
	Total ADHD Symptoms	6	9	14
	Oppositional Defiant Disorder Symptoms	9	9	15
	Conduct Disorder Symptoms	3	5	16

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Table E.2. Conners 4–Short Minimum Values Needed for Significance When Comparing Pre-test to Post-test T-scores: 95% Reliable Change Index (RCI)

Conners 4–Short Scale		Parent	Teacher	Self-Report
Content Scales	Inattention/Executive Dysfunction	8	10	15
	Hyperactivity	12	10	16
	Impulsivity	12	13	15
	Emotional Dysregulation	8	9	15
Impairment & Functional Outcome Scales	Schoolwork	8	11	17
	Peer Interactions	7	12	20
	Family Life	10	—	14

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Table E.3. Conners 4 Minimum Values Needed for Significance When Comparing Pre-test to Post-test Raw Scores: 95% Reliable Change Index (RCI)

Scale		Parent	Teacher	Self-Report
Content Scales	Inattention/Executive Dysfunction	9	13	17
	Hyperactivity	6	7	8
	Impulsivity	5	7	7
	Emotional Dysregulation	5	5	7
	Depressed Mood	4	3	5
	Anxious Thoughts	3	3	6
Impairment & Functional Outcome Scales	Schoolwork	3	4	6
	Peer Interactions	2	3	5
	Family Life	4	—	4
DSM Symptom Scales	ADHD Inattentive Symptoms	6	8	11
	ADHD Hyperactive/Impulsive Symptoms	6	7	8
	Total ADHD Symptoms	9	13	17
	Oppositional Defiant Disorder Symptoms	6	6	8
	Conduct Disorder Symptoms	3	3	7

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Table E.4. Conners 4–Short Minimum Values Needed for Significance When Comparing Pre-test to Post-test Raw Scores: 95% Reliable Change Index (RCI)

Conners 4–Short Scale		Parent	Teacher	Self-Report
Content Scales	Inattention/Executive Dysfunction	6	7	9
	Hyperactivity	4	4	6
	Impulsivity	4	4	5
	Emotional Dysregulation	3	3	4
Impairment & Functional Outcome Scales	Schoolwork	3	4	4
	Peer Interactions	2	3	5
	Family Life	3	—	4