RESUMO
Accumulating evidence supports the presence of a general psychopathology dimension, the p factor ('p'). Despite growing interest in the p factor, questions remain about how p is assessed. Although multi-informant assessment of psychopathology is commonplace in clinical research and practice with children and adolescents, almost no research has taken a multi-informant approach to studying youth p or has examined the degree of concordance between parent and youth reports. Further, estimating p requires assessment of a large number of symptoms, resulting in high reporter burden that may not be feasible in many clinical and research settings. In the present study, we used bifactor multidimensional item response theory models to estimate parent- and adolescent-reported p in a large community sample of youth (11-17 years) and parents (N = 5,060 dyads). We examined agreement between parent and youth p scores and associations with assessor-rated youth global functioning. We also applied computerized adaptive testing (CAT) simulations to parent and youth reports to determine whether adaptive testing substantially alters agreement on p or associations with youth global functioning. Parent-youth agreement on p was moderate (r =.44) and both reports were negatively associated with youth global functioning. Notably, 7 out of 10 of the highest loading items were common across reporters. CAT reduced the average number of items administered by 57%. Agreement between CAT-derived p scores was similar to the full form (r =.40) and CAT scores were negatively correlated with youth functioning. These novel results highlight the promise and potential clinical utility of a multi-informant p factor approach.
RESUMO
A key component of delivering mental health services involves evaluating psychosocial impairments linked to mental health concerns. Youth may experience these impairments in various ways (e.g., dysfunctional family and/or peer relationships, poor school performance). Importantly, youth may display symptoms of mental illness without co-occurring psychosocial impairments, and the reverse may be true. However, all available instruments for assessing youth psychosocial impairments presume the presence of mental health concerns among those assessed. Consequently, key gaps exist in knowledge about the developmental psychopathology of psychosocial impairments; and thus how to understand impairments in the context of youth mental health. To address these issues we developed a modified version of a 5-item measure of adult psychosocial impairments (i.e., Work and Social Adjustment Scale for Youth [WSASY]) and tested its psychometric properties. A mixed clinical/community sample of adolescents and parents completed parallel versions of the WSASY, along with a multi-domain, multi-method battery of measures of adolescent internalizing and externalizing concerns, parent psychosocial functioning, adolescent-parent conflict, adolescent peer functioning, and observed social skills. On both versions of the WSASY, increased scores related to increased adolescent mental health concerns, adolescent-parent conflict, parent psychosocial dysfunction, and peer-related impairments. WSASY scores also distinguished adolescents who displayed co-occurring mental health concerns from those who did not, and related to observed social skills deficits within social interactions with unfamiliar peers. The WSASY opens doors to new areas of inquiry regarding the developmental psychopathology of impairment, including questions regarding the onset of impairments and their links to mental health.
