a theory originated in 1894 by Sigmund Freud which states that all life impulses and behaviors are sex-motivated. See also Freud in this glossary.—SHSBC Binder 5 Approved Glossary, —Perception of Truth Approved Glossary (9 June 92), —SHSBC Binder 29 Approved Glossary, —SHSBC Binder 30 Approved Glossary, —PDC Volume 5 Approved Glossary