Just Noticeable Difference  

The smallest change in a sensory perception that is detectable 50% of the time.

 

Jung, Carl

A student of Freud who split from the Psychoanalytic Society because of his disagreements with Freud, especially his view of the collective unconscious.

Just-world phenomenon

the tendency of people to believe that the world is just and people therefore get what they deserve and deserve what they get.

James-Lange theory

the theory that our experience of emotion is our awareness of our physiological responses to emotion-arousing stimuli.