pychology -
n. (pl. -ies)
1 the scientific study of the human
mind and its functions, esp. those affecting
behaviour in a given context.
2 a treatise on or theory of this.
3 a the mental characteristics or attitude of a person or group. b the mental factors governing a situation or activity (the psychology of crime).
psychologist n. psychologize v.tr. & intr. (also -ise). [mod.L psychologia (as PSYCHO-, -LOGY)]