Key points are not available for this paper at this time.
From beginnings in imaginative literature and philosophy, the study of abnormal personality was taken up by clinicians who founded their investigations on the methods of observation and intuition. On the basis of case notes, experience and recollection, the pioneering psychiatrists constructed descriptive classifications which served as an initial taxonomy and enabled diagnostic and therapeutic work to proceed.
Walton et al. (Thu,) studied this question.