Answer:
Cattell and Allport were both well-known trait theorists.
Step-by-step explanation:
The trait theory of personality explains that even an individual has certain personality traits or characteristics that decide their behavior such as aggressive, passive, and happy etc. These traits (characteristics) are mode in behavior or attitude that tends to be present regardless of the situation.
For example- A person with extroversion behavior is more energetic, talkative and expressive while a person with introversion behavior has shy and reserve attitude.