Discovering fundamental building blocks of human expression and perception.

We investigate how and why nonverbal behavior shapes social judgments and decision making.

Nonverbal Expression Social Perception Lab

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What we study

Nonverbal behavior shapes social life.

Our research explores the fundamental building blocks of human communication by examining how nonverbal behaviors—particularly movements of the body, head, and face—communicate social rank, emotion, personality, and mental health.

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What we’ve learned.

Our work has been published in journals including Nature Human Behaviour, Journal of Personality and Social Psychology, Psychological Science, Emotion, Journal of Experimental Psychology: General, and Proceedings of the National Academy of Sciences: Nexus.

Ongoing research

Questions in motion.

We study how expression and perception guide the way people understand one another—and how those judgments shape the social world.

Face perception · Ongoing

Quantifying faces to understand universal face perception

We are developing novel, scalable, and automated techniques to measure variation in faces, to identify universal features guiding face perception.

Ongoing research01
Emotion · Ongoing

Smiles reveal well-being and personality

We’re establishing posed smiles as a form of self-expression that, when posed, offer a valid window into well-being and personality.

Ongoing research02
Social judgment · Ongoing

Nonverbal behavior shapes social hierarchies

We study how, why, and when nonverbal behavior enables people to influence others and ascend social hierarchies.

Ongoing research03
Emotion expression · Ongoing

Emotion expressions are fundamental

We study emotion expressions as fundamental features of human communication that generalize around the world and across the lifespan.

Ongoing research04
Threat · Ongoing

Geometric angularity and threat

We study whether humans co-opt an innate association between geometric angularity and threat to communicate dominance and threat through facial expressions, body posture, and head position.

Ongoing research05
Social rank · Ongoing

Contextual influences of social rank

We examine factors influencing when and why dominance and prestige are effective strategies for influencing others and rising to power.

Ongoing research07
Bodily expression · Ongoing

Bodily expression of emotion

We study if and how the body is used to communicate emotion.

Ongoing research09

The lab

People thinking together.

Zak Witkower

Meet the
Primary Investigator

Zak Witkower

Meet the team

Join us

Bring your questions.

We are recruiting graduate students to join the lab beginning in Fall 2027. Priority will be given to applicants with a strong research record, interests in nonverbal communication, social perception, emotion, and/or leadership, and experience with or interest in using R.

Interested in working with NESP Lab?

After reviewing our research and publications, get in touch to discuss how your interests align with our ongoing work.

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