To create this article, 19 people, some anonymous, worked to edit and improve it over time. This article has been viewed , times. Learn more There are many different kinds of case studies. There are also various uses for writing case studies, from academic research purposes to provision of corporate proof points. There are approximately four types of case studies: illustrative descriptive of events , exploratory investigative , cumulative collective information comparisons and critical examine particular subject with cause and effect outcomes.