Which research method in sociology can effectively combine insights from interviews, longitudinal studies, and case studies to provide a comprehensive understanding of social phenomena?

The research method in sociology that effectively combines insights from interviews, longitudinal studies, and case studies is called a mixed-methods approach. This method allows researchers to gather both qualitative data, like personal stories from interviews, and quantitative data, such as statistics from longitudinal studies. By using this combination, researchers can see the bigger picture of social phenomena, understanding not just the "what" but also the "why" behind social behaviors. For example, if studying youth crime, a researcher might conduct interviews with young offenders, track their behaviors over several years, and analyze specific cases to understand the influences on their actions. This comprehensive view helps create more effective solutions to social issues.