The Rev. James Van der Veldt, O.F.M., 84, emeritus professor of psychology at Catholic University, died Thursday at Doctors Hospital after suffering a stroke. At the time of his death, he was an assistant pastor at St. Matthew's Cathedral.

Father Van der Veldt joined the psychology department at Catholic University as a visiting professor in 1945, then served as associate professor and ordinary professor until 1958. After retiring, he continued to be a lecturer at Catholic University and Trinity College.

Born in the Netherlands, he studied at seminaries of the order of Friars Minor at the University of Louvain, where he received a doctorate, Nijmegen and Milan.

Father Van der Veldt then held positions with the Pontifical University of the Propogation of the Faith and the Pontifical Athenaeum Sancti Antonii in Rome from 1928 until 1940. He was with the Archdiocese of New York before joining the Catholic University faculty five years later.

He was the author of numerous publications, including "The City Set on a Hill," published in 1944, and "Psychiatry and Catholicism," published in 1957.

Father Van der Veldt was a member of the American Catholic Philosophical Association, the American Psychological Association, the Association for Mental Health and the National Committee for Mental Hygiene.

He was honored with the Office of the Order of Orange Nassau and membership in the Knights of Malta, of which he was chaplain at the time of his death.

He is survived by three brothers, the Rev. Hendrick Van der Veldt, O.F.M., and Johannus, of Holland, and Cornelius, of Canada, and two sisters, Petronella Ruhe and Anna Koopman, both of Holland.