Psychosexual Development: This is Sigmund Freud's theory that human beings, from birth, possess an instinctual libido (sexual energy) that develops in five stages.
Repression:This is a psychological defense mechanism where disturbing thoughts, memories or desires are excluded from consciousness.
Social Development:This refers to how individuals learn to interact with others and understand their place within society. It involves learning the values, knowledge and skills necessary for successful social participation.