In his research, Professor Rubin seeks to identify circumstances in a person's bias that are especially likely to impede effective problem solving. His research is most likely in the area of:.

cognition

Explanation:

Based on the information provided within the question it can be said that the professor's research is most likely in the area of cognition. This area focuses on the mental processes of an individual when acquiring knowledge and understanding through the aspects of thought, experience and even the five senses of the body. Any bias that prevents acquiring knowledge or understanding would also affect the individuals problem solving skills as in this scenario.

because he is that the right

answer; ratification;