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repressed memory

...on critical examination, the scientific evidence for repression crumbles. --Harrison G Pope

In Freud's theory of "repression" the mind automatically banishes traumatic events from memory to prevent overwhelming anxiety. Freud further theorized that repressed memories cause "neurosis," which could be cured if the memories were made conscious. While all this is taught in introductory psychology courses and has been taken by novelists and screenwriters to be a truism, Freud's repression theory has never been verified by rigorous scientific proof. --John Hockmann

A repressed memory is the memory of a traumatic event unconsciously retained in the mind, where it is said to adversely affect conscious thought, desire, and action.

It is common to consciously repress unpleasant experiences. Many psychologists believe that unconscious repression of traumatic experiences such as sexual abuse or rape is a defense mechanism which backfires. The unpleasant experience is forgotten but not forgiven. It lurks beneath consciousness and allegedly causes a myriad of psychological and physical problems from bulimia to insomnia to suicide.

The theory of unconsciously repressing the memory of traumatic experiences is controversial. There is little scientific evidence to support either the notion that traumatic experiences are typically unconsciously repressed or that unconscious memories of traumatic events are significant causal factors in physical or mental illness. Most people do not forget traumatic experiences unless they are rendered unconscious at the time of the experience. No one has identified a single case where a specific traumatic experience in childhood was repressed and the repressed memory of the event, rather than the event itself, caused a specific psychiatric or physical disorder in adulthood.

The strength of the scientific evidence for repression depends on exactly how the term is defined. When defined narrowly as intentional suppression of an experience, there is little reason to doubt that it exists. But when we talk about a repression mechanism that operates unconsciously and defensively to block out traumatic experiences, the picture becomes considerably murkier.

Evidence concerning memory for real-life traumas in children and adults indicates that these events--such as the Chowchilla kidnappings, the sniper killing at an elementary school, or the collapse of skywalks at a Kansas City hotel--are generally well remembered....complete amnesia for these terrifying episodes is virtually nonexistent (Schacter 1996, 256).

Psychologist Lenore Terr, a defender of repressed memory therapy , argues that repression occurs for repeated or multiple traumas, such as a repeatedly abused child. Schacter notes that "hundreds of studies have shown that repetition of information leads to improved memory, not loss of memory, for that information." He also notes that people who have experienced repeated traumas in war, even children, generally remember their experiences. A person who suffers a great trauma often finds that she cannot get the event out of her mind or dreams. Terr's theory is that the child becomes practiced at repression to banish the awful events from awareness, and forgetting might aid in the child's survival. Her dissociative theory, however, is based on speculation rather than scientific evidence.

Most psychologists accept as fact that it is quite common to consciously repress unpleasant experiences, even sexual abuse, and to spontaneously remember such events long afterward. Most of the controversy centers around recovered memories during repressed memory therapy (RMT). Critics of RMT maintain that many therapists are not helping patients recover repressed memories, but are suggesting and planting false memories of alien abduction, sexual abuse, and satanic rituals.