Prerequisite: PY621, PY720, 18 graduate hours, and written or electronic permission of the director of field education. M.S. students must have completed PY621 and PY720. By special arrangement with an individual instructor and a selected mental health agency, students engage in a supervised clinical experience. Provides the student with an opportunity to develop and apply clinical diagnostic skills in a practical setting. On-campus group meetings are also included. An externship fee is charged.