Marietta is studying for a psychology test and is working with flashcards that she made. One of them says the following: "This is a person's characteristic manner of thinking, feeling, behaving, and relating to others." What word will she find when she flips the card over?

She will find the word personality.

Explanation:

Personality refers to the set of internal factors which define an individual's psychology, therefore being expressed as conducts.

As the question explains, personality refers to the set of manners of thinking an individual has, as well as feelings, behaviors and social relations, amongst others.