Elsevier

Behavior Therapy

Volume 32, Issue 1, Winter 2001, Pages 139-153
Behavior Therapy

Original Research
Core beliefs in bulimia nervosa and depression: The discriminant validity of young's schema questionnaire

https://doi.org/10.1016/S0005-7894(01)80049-6Get rights and content

It has been suggested that depression and bulimia nervosa share common patterns of core beliefs, despite their differences in more superficial levels of cognition (negative automatic thoughts; dysfunctional assumptions). Although recent research appears to support this proposal, its methodological limitations precluded the ability to assess potentially important differences in core beliefs across the groups. The present study addresses those limitations, assessing a broad range of core beliefs among five groups: nonclinical women, nondepressed bulimics, mildly depressed bulimics, severely depressed bulimics, and major depressive disorder patients. Young's Schema Questionnaire (YSQ) was used as the measure of core beliefs. All of the clinical groups reported less healthy core beliefs than the comparison women, but the major depressive disorder patients and the severely depressed bulimics had more unhealthy core beliefs than the nondepressed bulimics. Multivariate analysis demonstrated differences between all five groups, including the depressed patients and the severely depressed bulimics. These findings support the discriminant validity of the YSQ, suggesting that bulimia and depression are differentiated by core beliefs as well as by more superficial cognitive representations. These preliminary results suggest that the YSQ may be a clinically useful measure of schema-level representations in these disorders, although it will also be necessary to consider the role of schema process in different disorders. If the role of core beliefs in depression and bulimia is confirmed in future research, then there may be a need to adapt cognitive-behavioral treatments for these disorders accordingly.

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