Although repression, as a defense mechanism, is highly accepted as possible in psychology, the concept of repressed memories of and their storage in the unconscious mind, is highly questioned

The correct answer is painful experiences.

Repression is one of the main foundatins on which psychoanalysis is based. Sigmund Freud was the first person to recognise the meaning of repressed memories. Whenever a shocking event occurs, the mind pushes into some inacessible spot of the unconcious.

Typically, repressed memories are associated to painful experiences such as sexual, mental or physical abuse.

Professoinal help is needed in order to reduce the impacts through an individual's life.

answer; which categories of people are most at risk of becoming a criminals;