Social skills training (SST) is a structured approach to improving how individuals interact with others. It focuses on developing specific skills that help people navigate interpersonal situations more effectively. SST is used for all ages, from children to adults, and is also used for people with psychiatric disorders, such as autism spectrum disorder (ASD) and schizophrenia, who have difficulty building interpersonal relationships. Previous studies have reported that SST is useful in improving social skills, including those of people with psychiatric disorders. However, SST requires multiple facilitators with specific expertise, making access to it difficult. To overcome such disadvantages, this study investigates the usefulness of automated SST-based technology. This chapter describes conventional SST for children and adults, as well as the type of SST used in this research.