Answer:
personality psychology.
Step-by-step explanation:
Personality psychology: The term personality psychology is referred to as one of the branches in psychology that aims at studying the personality of an individual and related differences among different individuals. Therefore, it is responsible for comprehending about the differences and the similarities between different groups and people. It states that individuals are different from each other because of the specific psychological forces.
In reference to the question, Edmund wants to conduct research the area of personality psychology.