Answer:
individual differences
Explanation:
Personality psychology or differential psychology is the part of psychology that is dedicated to describing and explaining "lasting, non-pathological individual differences that influence behavior within a given population." Moreover, this discipline aims to integrate empirical results into a theory of personality and to develop methods for psychodiagnosis and to substantiate them theoretically. While some authors use both terms synonymously, others prefer to treat them as two different disciplines.
In the study of personality psychology it is possible to study how people vary in the levels of anxiety, self-esteem or worry that represent the approach of individual differences.
