The Id, Ego, and Superego:

1. Id - primitive, selfish aspect demanding immediate gratification by increasing pleasure and reducing tension.

2. Ego - grounded in reality, the ego is responsible for mediating between the id and the superego; it functions in the conscious, preconscious, and unconscious mind.

3. Superego - internalization of parental interjections (extreme); made up of the "ego ideal" and the "conscience".

Motivational Instincts:

1. Libido - sexual and ego drives found in the id

2. Aggression - death instincts

3. Neurosis - results when the superego imposes guilt on the ego to limit the impulses of the id. Neuroses stem from childhood conflicts that occur when the balance between the libido and ego mechanisms are unbalanced.