Internalizing and Externalizing Personality Dimensions and Clinical Problems in Adolescents |
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Authors: | Christopher J Hopwood Carlos M Grilo |
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Institution: | (1) Clinical Psychology, Department of Psychology, Michigan State University, East Lansing, MI 48824-1116, USA;(2) Yale University School of Medicine, New Haven, CT, USA |
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Abstract: | Ostensible psychiatric comorbidity can sometimes be explained by shared relations between diagnostic constructs and higher
order internalizing and externalizing dimensions. However, this possibility has not been explored with regard to comorbidity
between personality pathology and other clinical constructs in adolescents. In this study, personality pattern scales from
the Millon Adolescent Clinical Inventory in a sample of 492 adolescent inpatients were subjected to a principal components
analysis to yield oblique internalizing and externalizing dimensions. Relations between personality dimensions and well-established
measures of psychopathology (depression, alcohol abuse, drug abuse) and other indicators of clinical dysfunction (self-esteem,
suicidality, violence) were assessed before and after controlling for these higher-order personality dimensions. Associations
between personality scales and indicators of psychopathology and clinical dysfunction were minimal with these higher order
components controlled. These results suggest that internalizing and externalizing personality dimensions explain most of the
associations between personality patterns and indicators of psychopathology and clinical dysfunction in adolescent patients. |
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