The combined effects of self-referent information processing and ruminative responses on adolescent depression.

Adolescents who develop depression have worse interpersonal and affective experiences and are more likely to develop substance problems and/or suicidal ideation compared to adolescents who do not develop depression. This study examined the combined effects of negative self-referent information processing and rumination (i.e., brooding and reflection) on adolescent depressive symptoms. It was hypothesized that the interaction of negative self-referent information processing and brooding would significantly predict depressive symptoms, while the interaction of negative self-referent information processing and reflection would not predict depressive symptoms. Adolescents (n = 92; 13-15 years; 34.7% female) participated in a 6-month longitudinal study. Self-report instruments measured depressive symptoms and rumination; a cognitive task measured information processing. Path modelling in Amos 19.0 analyzed the data. The interaction of negative information processing and brooding significantly predicted an increase in depressive symptoms 6 months later. The interaction of negative information processing and reflection did not significantly predict depression, however, the model not meet a priori standards to accept the null hypothesis. Results suggest clinicians working with adolescents at-risk for depression should consider focusing on the reduction of brooding and negative information processing to reduce long-term depressive symptoms.