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1.
J Clin Psychol ; 67(6): 591-608, 2011 Jun.
Article in English | MEDLINE | ID: mdl-21381026

ABSTRACT

The authors conducted three studies to construct and examine the psychometric properties of a 27-item version of the Mood and Anxiety Symptom Questionnaire-90 (MASQ-90; Watson & Clark, 1991a). The Anxiety Depression Distress Inventory-27 (ADDI-27) contains three empirically derived scales: Positive Affect, Somatic Anxiety, and General Distress, which are relevant dimensions of the tripartite model of affect. Each scale is composed of nine items, and the estimate of scale reliability for each scale score was ≥ .80 across the three studies. Results of exploratory and confirmatory factor analyses provided adequate support for a 3-factor model. Additional estimates of concurrent validity documented the ADDI-27 scales' convergent and discriminant validity. We also identified three construct relevant correlates for each scale score. Overall, the ADDI-27 appears to be a content valid, reliable, and multidimensional measure of the tripartite model of affect.


Subject(s)
Anxiety Disorders/diagnosis , Surveys and Questionnaires/standards , Adolescent , Adult , Checklist , Factor Analysis, Statistical , Female , Humans , Male , Middle Aged , Models, Psychological , Psychometrics , Reproducibility of Results , Young Adult
2.
J Clin Psychol ; 67(1): 82-98, 2011 Jan.
Article in English | MEDLINE | ID: mdl-20939019

ABSTRACT

We describe the development of a new self-report instrument, the Social Anxiety and Depression Life Interference-24 (SADLI-24) inventory. We initially retained 30 content specific items for the instrument (Study 1). In Study 2 (N = 438), we established a 2-factor solution, Social Anxiety Life Interference-12 (SALI-12) and Depression Life Interference-12 (DLI-12). We also examined estimates of known-groups and concurrent validity. Confirmatory factor analysis in Study 3 (N = 430) provided support for the oblique two-factor structure. In Study 4 (N = 179), we provided additional support for estimates of known-groups validity. In Study 5 (N = 63), we evaluated estimates of test-retest reliability. Both SADLI-24 scale scores showed good estimates of internal consistency.


Subject(s)
Anxiety Disorders/diagnosis , Depression/diagnosis , Personality Inventory/standards , Adolescent , Anxiety Disorders/physiopathology , Depression/physiopathology , Factor Analysis, Statistical , Female , Humans , Male
3.
J Clin Psychol ; 66(12): 1324-45, 2010 Dec.
Article in English | MEDLINE | ID: mdl-20715023

ABSTRACT

The authors conducted two studies to address issues of the dimensionality, scale reliability, and psychometric properties of scores on the Reynolds Adolescent Depression Scale-Second Edition (RADS-2; Reynolds, 2002) in samples of adolescent psychiatric inpatients. In Study 1 (N=262), they used bifactor analysis to further evaluate the general and specific components of the RADS-2. In Study 2 (N=196), they used confirmatory factor analysis to evaluate the fit of a 1-factor model, the original 4-factor model, a second-order model, and a bifactor model to a new sample data. In both studies, the total RADS-2 and content-specific subscale scores showed acceptable estimates of reliability (i.e., scale reliability estimates >.80). Estimates of concurrent validity were also examined. Scores of the RADS-2 total and content-specific subscale scores were useful in differentiating between the responses of youth with mood disorder diagnoses and those with other primary psychiatric disorder diagnoses. The authors also conducted correlation analyses to identify potential correlates for the total RADS-2 scale and the proposed subscale scores.


Subject(s)
Depression/diagnosis , Psychiatric Status Rating Scales , Adolescent , Factor Analysis, Statistical , Female , Humans , Male , Psychometrics/instrumentation , Reproducibility of Results
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