Effectiveness of Dialectical Behaviour and Schema-Focused Therapies in the Management of Depressive Disorders among In-School Adolescents in Edo State

The study investigated the effectiveness of Dialectical Behaviour and Schema-Focused Therapies in managing depressive disorders in in-school adolescents in Benin Metropolis. The study was a quasi-experimental research design that adopted the pre-test-post-test, non-equivalent control group. The population for this study consisted 14,473 senior secondary school students in all the public secondary schools in Benin Metropolis. A sample size of seventy-six (76) adolescents was used. The instrument for the study was Adolescent Depressive Disorder Questionnaire (ADDQ). Three (3) research questions were raised, their corresponding hypotheses were formulated and tested at 0.05 alpha level of significance. The data obtained were analyzed using t-test and Analysis of Variance (ANOVA). The findings of the study revealed no significant effect of both Dialectical Behaviour and Schema-Focused Therapies in managing depressive disorders in in-school adolescents. However, there was a significant effect of Dialectical Behaviour on the depressive disorders of in-school adolescents than those not exposed to any treatment (Control Group). It was concluded that although both Dialectical Behaviour and Schema-Focused Therapies were not statistically significant in managing depressive disorders in in-school adolescents in Benin Metropolis, there was a difference in the depressive disorders mean scores at pre-test and post-test. Received: 2 September 2024 / Accepted: 3 November 2024 / Published: 20 November 2024