Sometimes when we encounter behavior that is unpleasant or unexpected, we assume that something about the person-and not the situation-caused the behavior. in this sense, lay people are most like

Lay people are most like Personality psychologists

Explanation:

Personality psychologists observe social situations and how they are influenced by individual emotion and conduct. They can work in a variety of industries such as academia, healthcare, government or business.

Personality psychologists examine individual behavior and determine how it influences the different results of a specific individual and group situations. They explain behavior in some areas such as aggression, persuasion, attraction, conformity and group interaction. They usually specialize in terms of leadership, attitude, group behavior, and conflict resolution.