Certificate, Postdoctoral Respecialization in Clinical Psychology The Postdoctoral Respecialization in Clinical Psychology is a certificate program for individuals who already have a non-clinical doctorate in psychology. Knowledge areas for this program are instructed by the same faculty as the doctoral program in clinical psychology, which received APA accreditation in 1991. Students generally require at least 36 months to complete the coursework, psychological assessment labs, practicum and internship.