1 Senior Lecturer, Department of Psychology, University of Aberdeen
A group of ten patients suffering from obsessional personality (anankastic) disorder was compared with a matched control group of non-obsessional patients and with a matched normal control group. On a free sorting task with non-verbal material the anankastic group tended to over-define their categories and thus required more categories. This was discussed in relation to a central hypothesis and to classical clinical observations.
Submitted on December 3, 1968