Youth Cognitive-Behavioral Depression Prevention: Testing Theory in a Randomized Controlled Trial

Area of Science:

• Psychology
• Clinical Psychology
• Developmental Psychology

Background:

• Adolescent depression is a significant public health concern.
• Cognitive-behavioral interventions show promise for depression prevention.
• The Penn Resiliency Program (PRP) is a cognitive-behavioral program designed for adolescents.

Purpose of the Study:

• To test the theoretical model of change for the Penn Resiliency Program (PRP).
• To evaluate the efficacy of PRP in preventing depressive symptoms in adolescents.
• To examine the role of explanatory style as a mediator in PRP's effects.

Main Methods:

• A randomized controlled trial involving 697 middle school students.
• Participants were assigned to PRP, an assessment-only control (CON), or a placebo-control (PLA) condition.
• Explanatory style and depressive symptoms were assessed over 24 months.

Main Results:

• PRP demonstrated significant indirect effects on depressive symptoms through improved explanatory style in two of three schools.
• No significant indirect effects were found in the third school where PRP was ineffective for depressive symptoms.
• When effective, PRP's cognitive-behavioral training offered incremental value over non-specific components.

Conclusions:

• The Penn Resiliency Program's theoretical model of change is plausible.
• Cognitive-behavioral interventions like PRP can reduce adolescent depression by targeting explanatory style.
• The effectiveness of PRP is dependent on its ability to improve explanatory style, highlighting the importance of specific therapeutic components.