Adolescent depression: Evaluation of a preventive intervention and identification of risk factors

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This project will evaluate the long-term effectiveness of a school-based program to prevent depression among adolescents. It also aims to identify factors that predict the onset of depression in those who do not receive the intervention. The intervention focuses on the training of interpersonal problem solving skills and enhancement of optimistic thinking styles within a classroom-based curriculum. This project extends the current research program of the applicant. The intervention has already been developed and implemented with 1600 young people, with the support of local education authorities. The evaluation uses well-researched measures and includes a control group of adolescents who do not receive the intervention. Around 5% of adolescents experience clinical levels of depression and an even larger percentage show subclinical levels. Depression results in many debilitating consequences such as impaired school, work and social functioning and is also a risk factor in adolescent suicide. The prevention of mental health problems is a priority for Commonwealth and State governments and yet there is minimal research to demonstrate the effectiveness of preventive interventions, particularly in the area of depression. If the present study demonstrates a positive outcome, it will provide important guidelines as to preventive materials that should be included in the school curriculum. It is predicted that: a) the intervention will be associated with lower levels of depression over the 4 year follow-up, particularly for adolescents who are assessed as showing mild symptoms of depression, poor problem solving skills or pessimistic cognitive style prior to intervention b) risk factors for the development of depression in adolescents who do not receive the intervention will include initial mild symptoms of depression, poor problem solving skills and pessimistic attributional style.