Mediators and Moderators of a School-Based Cognitive-Behavioral Depression Prevention Program

Area of Science:

• Child and Adolescent Psychology
• Mental Health Interventions
• Preventive Psychiatry

Background:

• Depression is a significant concern in middle school populations.
• Early intervention programs are crucial for mitigating depressive symptoms.
• Understanding program moderators and mediators enhances intervention efficacy.

Purpose of the Study:

• To evaluate moderators and mediators of the Positive Thoughts and Actions (PTA) depression prevention program.
• To compare PTA with an Individual Support Program (ISP) for middle school students.
• To assess the long-term effects of PTA on depressive symptoms and functional outcomes.

Main Methods:

• 120 middle school students were randomized to PTA or ISP.
• Hierarchical regression analysis was used to examine moderators and mediators.
• Measures included depressive symptoms, parent-child communication, school attitude, and health behavior.

Main Results:

• Ethnic minority status moderated PTA effects at 12-month follow-up, with greater benefit for White participants.
• This moderation was linked to higher dropout rates among ethnic minority youth.
• PTA improved health behaviors and school attitudes, but these did not mediate symptom reduction.

Conclusions:

• The PTA program's effectiveness may vary across ethnic groups, potentially due to differential attrition.
• While PTA positively impacts functional outcomes, its direct mediational pathway to symptom reduction needs further investigation.
• Future research should address ethnic disparities in program engagement and long-term outcomes.