An advantage of using a case study is the information it is able to provide regarding rare or unusual conditions in specific individuals . By studying these individuals, psychologists are able to collect data on unique phenomena in psychology and formulate hypotheses that can be tested in the future (Cozby and Bates, 2012). Another advantage of case studies is that they can provide very detailed results. Rather than simply conducting an experiment and having the participants leave after a short time, case studies involve being with the participants for an extended period of time.