One advantage of case studies is that they:

Case studies are advantageous mainly because they allow for in-depth, longitudinal analysis. This method involves a detailed exploration of a single subject or a small group, providing rich qualitative insights that reveal complex psychological phenomena. Through this comprehensive approach, researchers can investigate the nuances and intricacies of individual behaviors, thoughts, and emotions over time, which might be overlooked in larger studies.

This depth of understanding is particularly valuable in cases where the subject matter is unique or where specific, detailed information is necessary, such as in clinical settings or when examining rare psychological conditions. While other research methods may focus on broad patterns or trends across large populations, the case study approach allows researchers to capture the complexity of individual cases, making it a powerful tool in psychological research.

Options that suggest large sample sizes, generalizations to broader populations, or the provision of easily quantifiable results do not accurately characterize case studies. They inherently focus on the richness of data from fewer subjects rather than broad statistical representation.