Note. N = 274 French version; N = 274 English version. RMSEA = Root mean square error of approximation; CFI = Comparative Fit Index; TLI = Tucker-Lewis Index; SRMR = Standardized root mean square residual; ∆CFI = change in CFI. *p < .05, **p < .01, ***p < .001. Exploration of partial invariance models for the Inattention/Executive Dysfunction, Hyperactivity, Emotional Dysregulation, and Negative Self-Concept scale revealed that six, five, three, and two intercepts had to be released, respectively, for the strict invariance hypothesis to hold.

Note. N = 195 French version; N = 195 English version. RMSEA = Root mean square error of approximation; CFI = Comparative Fit Index; TLI = Tucker-Lewis Index; SRMR = Standardized root mean square residual; ∆CFI = change in CFI. *p < .05, **p < .01, ***p < .001. Exploration of partial invariance models for the Hyperactivity and Negative Self-Concept scale revealed that one factor loading in each scale had to be released to meet the strong invariance hypothesis. To meet the strict invariance hypothesis, four item intercepts had to be released for the Inattention/Executive Dysfunction Scale, two for the Impulsivity Scale, and one for the Emotional Dysregulation Scale.

Note. N = 283 Spanish version; N = 283 English version. RMSEA = Root mean square error of approximation; CFI = Comparative Fit Index; TLI = Tucker-Lewis Index; SRMR = Standardized root mean square residual; ∆CFI = change in CFI. *p < .05, **p < .01, ***p < .001. Exploration of partial invariance models found that two item intercepts had to be released for the Inattention/Executive Dysfunction, Hyperactivity, and Negative Self-Concept scale for the strict invariance model to hold.

Note. N = 230 Spanish version; N = 230 English version. RMSEA = Root mean square error of approximation; CFI = Comparative Fit Index; TLI = Tucker-Lewis Index; SRMR = Standardized root mean square residual; ∆CFI = change in CFI. *p < .05, **p < .01, ***p < .001. Exploration of partial invariance models found that one loading had to be released for the Hyperactivity and Impulsivity scale, and three loadings had to be released for the Negative Self-Concept scale for the strong invariance model to hold. Further, one item intercept had to be released for the Hyperactivity, Impulsivity, and Negative Self-Concept scales, and two item intercepts for the Inattention/Executive Dysfunction and Emotional Dysregulation scales for strict invariance to hold.

Note. Values presented are Expected Test Score Standardized Differences (ETSSD); guidelines for interpretation: small effect size ≥ |0.20|; medium effect size ≥ |0.50|; large effect size ≥ |0.80|. Positive ETSSD values indicate that individuals with equal amounts of the constructs being measured who took the French translation as part of the translation study sample scored higher than individuals who took the English version.

Note. Values presented are expected test score standardized differences (ETSSD); guidelines for interpretation: small effect size ≥ |0.20|; medium effect size ≥ |0.50|; large effect size ≥ |0.80|. Positive ETSSD values indicate that individuals with equal amounts of the constructs being measured who took the Spanish translation as part of the translation study sample scored higher than individuals who took the English version.