Dr. Hewes' research focuses interpersonal communication, communication and cognition, group decision-making, conflict management, and evolutionary approaches to the study of personal relationships.

He edited The Cognitive Bases of Interpersonal Communication, and is at work on another book. His research has appeared in such journals as Human Communication Research, Communication Yearbook, Quarterly Journal of Speech, and Communication Monographs.

He has received numerous awards and grants for his scholarship, teaching, and advising and has been active in the International Communication Association and National Communication Association, serving as chairperson of the interpersonal communication division of both organizations and as board member of the former.

Dr. Hewes teaches graduate courses in quantitative communication research methods, conflict and communication, interpersonal communication, evolutionary approaches to communication, love and commitment, and cognitive approaches to communication research.