Psychology Glossary: O Index
These are brief definitions of psychology terms beginning with O. Click on the term for a more detailed definition.
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Obsessive-Compulsive Personality Disorder Definition
A personality disorder characterized by a preoccupation with perfection, rigid behaviors and feelings of helplessness...
A personality disorder characterized by a preoccupation with perfection, rigid behaviors and feelings of helplessness...
Oedipal Complex Definition
A term used by Freud in his theory of psychosexual stages of development to describe a boy’s feelings of desire for his mother and jealously and anger towards his father...
A term used by Freud in his theory of psychosexual stages of development to describe a boy’s feelings of desire for his mother and jealously and anger towards his father...
Opponent-Process Theory Definition
Opponent-process theory suggests that color perception is controlled by the activity of two opponent systems; a blue-yellow mechanism and a red-green mechanism...
Opponent-process theory suggests that color perception is controlled by the activity of two opponent systems; a blue-yellow mechanism and a red-green mechanism...
Oral Stage Definition
The oral stage is the first stage of Freud’s stages of psychosexual development, lasting from birth to 18 months...
The oral stage is the first stage of Freud’s stages of psychosexual development, lasting from birth to 18 months...