Dr. Kushman is conducting a case study.
In the social sciences and life sciences, a case study is a research method that involves a detailed and in-depth examination of a topic of study (the case, which may be a person or a situation), as well as its Related contextual conditions. Case studies can be produced following a formal research method and usually last for a specific period of time. It is likely that these case studies appear in formal research sites, such as journals and professional conferences, instead of popular works. Case studies may involve both qualitative and quantitative research methods.
