The correct answers are social and personality psychologists.
What is Psychology?
This refers to the study of human behavior and how they can be influenced and the social behaviors that can be learned.
Hence, we can see that based on the given description, we can see that it is a social psychologist that would study why the same person may act differently in different situations and a personality psychologist would study why different people act differently in the same situation
Read more about social psychology here:
https://brainly.com/question/3951300
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