The Minnesota Model: A Clinical Assessment of Its Effectiveness in Treating Anxiety and Depression Compared to Addiction

Abstract

The current study compared and assessed the effectiveness of the Minnesota model in reducing psychological symptoms of anxiety and depression among two groups: individuals with clinically diagnosed addiction only (n = 29) and individuals with clinically diagnosed anxiety/depression in the absence of addiction (n = 25). Anxiety and depression were measured using the Generalised Anxiety Disorder 7 and the Patient Health Questionnaire 9, respectively. Two one-way analyses of covariance found no significant differences in post-intervention anxiety and depression scores when comparing the addiction group and the anxiety/depression group (F(1, 51) = 0.075, p = 0.786 and F(1, 51) = 0.302, p = 0.585, respectively). Reliable change index calculations also indicated that both the addiction group and the anxiety/depression group exhibited clinically significant reductions in anxiety and depression following treatment. These findings are considered in light of key methodological limitations, and the theoretical and therapeutic implications are discussed.