Which of the following is NOT one of the defense mechanisms identified in psychology?

Procrastination is not classified as a defense mechanism in psychology. Defense mechanisms are unconscious psychological strategies used to cope with anxiety and maintain an emotional balance. They include various methods individuals might utilize to protect themselves from feelings of anxiety or guilt.

Denial is a common defense mechanism where a person refuses to accept reality or facts, thus protecting themselves from uncomfortable feelings. Repression involves unconsciously blocking out painful or threatening thoughts and memories from awareness, which helps in reducing emotional pain. Projection, on the other hand, entails attributing one's unacceptable thoughts or feelings to someone else, providing a way to cope with feelings of inadequacy.

Understanding the specific characteristics and roles of these mechanisms is essential in psychology, whereas procrastination is more related to time management issues or behavioral patterns rather than a psychological defense strategy.