James-lange theory of emotion: the idea that the perception of an emotionarousing stimulus leads to a behavioural response that results in differing sensory and motor feedback to the brain, which is interpreted as an emotion.

jealousy: typically refers to the thoughts, feelings, and behaviours that occur when a person believes a valued relationship is being threatened by a rival. This rival may or may not know that he or she is perceived as a threat.

Jung (1875-1961): A Swiss psychologist, founder of analytical psychology. Jung placed importance on a hypothetical collective unconsciousand explored the symbolic nature of dreams. His work also included exploring the psyche through three principles; the principle of opposites, equivalence and

just world hypothesis: the assumption that the world is a fair and just place in which people receive what they deserve.