Item response theory analyses of parent and teacher ratings of the ADHD symptoms for recoded dichotomous scores
- Authors: Gomez, Rapson , Vance, Alasdair , Gomez, Andre
- Date: 2011
- Type: Text , Journal article
- Relation: Journal of Attention Disorders Vol. 15, no. 4 (2011), p. 269-285
- Full Text: false
- Reviewed:
- Description: Objective: The two-parameter logistic model (2PLM) was used to evaluate the psychometric properties of the inattention (IA) and hyperactivity/impulsivity (HI) symptoms. Method: To accomplish this, parents and teachers completed the Disruptive Behavior Rating Scale (DBRS) for a group of 934 primary school-aged children. Results: The results for the discrimination parameters showed that all the IA and HI symptoms for both groups of respondents were generally good for discriminating those with and without IA and HI, respectively. For virtually all symptoms, their threshold values showed endorsement of the symptoms when the underlying trait levels were at least 1 to 1.5 SD above the mean. The item information function values for most symptoms indicated reasonable reliability from around the mean trait levels to moderately high trait levels. Conclusion: These findings indicate good discrimination and reliability for parent and teacher ratings of the DBRS for identifying children with relatively high levels of the ADHD symptoms. (J. of Att. Dis. 2011; 15(4) 269-285) © 2011 SAGE Publications.
Children's depression inventory: Invariance across children and adolescents with and without depressive disorders
- Authors: Gomez, Rapson , Vance, Alasdair , Gomez, Andre
- Date: 2012
- Type: Text , Journal article
- Relation: Psychological Assessment Vol. 24, no. 1 (2012), p. 1-10
- Full Text: false
- Reviewed:
- Description: In the study, the authors examined the measurement (configural, factor loadings, thresholds, and error variances) and structural (factor variances, covariances, and mean scores) invariance of the Children's Depression Inventory (CDI; Kovacs, 1992) across ratings provided by clinic-referred children and adolescents with (N = 383) and without (N = 412) depressive disorders. Multiple-group confirmatory factor analysis of the Craighead, Smucker, Craighead, and Ilardi (1998) CDI model supported full measurement invariance and invariance for structural variances and covariances. Invariance for thresholds was also supported by multiple indicators multiple causes (MIMIC) procedures that controlled for the effects of age; sex; and the presence or absence of anxiety disorders, attention-deficit/hyperactivity disorder, and oppositional defiant/conduct disorders. The MIMIC analyses showed that for latent mean scores, the group with depressive disorders had higher scores, with at least medium effect sizes, for Self-Deprecation and Biological Dysregulation. The theoretical, psychometric, and clinical implications of the findings are discussed. © 2011 American Psychological Association.