Instrumental case studies are helpful in fields like psychology, where an individual case can provide valuable details about frequent human behaviors or societal developments. Anna O as well as the talking heal: Anna O (pseudonym) was a German lady who was one of the initially people to undertake psychoanalysis. https://damienrvcve.fare-blog.com/35252254/the-single-best-strategy-to-use-for-case-study-help