In this research project, we aim at realizing economic growth through the improvement of mental health. With this aim in mind, we evaluate the effectiveness of interventions intended for alleviating depression and/or anxiety and which are available for a wide range of people with ease. These interventions include computerized cognitive behavioral therapy (CCBT) using personal computers or smartphones. We also examine whether consumer confidence, social capital, and/or non-cognitive ability, which are thought of as related to economic growth, would improve by the above mentioned interventions.