 When the Interchurch World Movement collapsed in 1920, Boisen again fell victim to psychosis, and his family had him hospitalized at Westboro State Hospital, where it took him fifteen months to recover.While at Westboro, Boisen experienced a religious calling to work to bring religion and medicine closer together.After his release, Boisen began studies in the psychology of religion at Andover Theological Seminary where he remained from 1922 to 1924 working especially with the physician and ethicist Richard Cabot.