In psychology, intellectualization (intellectualisation) is a defense mechanism by which reasoning is used to block confrontation with an unconscious conflict and its associated emotional stress – where thinking is used to avoid feeling. It involves emotionally removing one's self from a stressful event. Intellectualization may accompany, but is different from, rationalization, the pseudo-rational justification of irrational acts.
Intellectualization was among the first defense mechanisms identified by Sigmund Freud. He believed that memories have both conscious and unconscious aspects, and that intellectualization allows for the conscious analysis of an event in a way that does not provoke anxiety.