The 1990s introduced new profiles who contributed insights to the field. Among these authors we find Brant Cortright, Stuart Sovatsky, David Lukoff, Robert P. Turner and Francis Lu. Cortright and Sovatsky made contributions to transpersonal psychotherapy. Both authors published their primary work as part of the SUNY-series. Lukoff, Turner and Lu, writers in the clinical field, were the authors behind the proposal for a new diagnostic category to be included in the DSM-manual of the "American Psychiatric Association". The category was called "Psychoreligious or psychospiritual problem" and was approved by the Task Force on DSM-IV in 1993, after changing its name to "Religious or spiritual problem".