Ritically evaluate the strengths and weaknesses of using patient case studies to understand cognitive processes

i will upload a chapter from my book which is the main source of information, the reference for it is Methods Companion(2010). Edited by Kaye, H , Cognitive Psychology (2nd ed., pp. 59-96). Milton Keynes: The Open University.

the second source of information is from this article, Caramazza, A. and Coltheart, M. (2006) Cognitive Neuropsychology twenty years on. Cognitive Neuropsychology, Vol.23, pp3-12. this is only to be referred to, not the main source of information.

no other sources should be used.