Can you spot a psychopath by looking at their eyes?

This video answers the question: Is it possible to identify a psychopath by looking at their eyes? Specifically, this question is referring to the idea of measuring pupil dilation (pupillometry) in psychopaths and non-psychopaths and seeing if there’s a difference.


Psychopathy:

There are two types of psychopathy: Factor 1 (primary, interpersonal affective) and Factor 2 (lifestyle, antisocial) psychopathy. Factor 1 psychopathy has characteristics like grandiosity, pathological lying, manipulation, a superficial charm, callous, unemotional, low neuroticism and lack of guilt or remorse. Factor 2 psychopathy has a parasitic lifestyle, being prone to boredom, sensation seeking, impulsivity, irresponsibility, a failure to have long term goals, poor behavioral controls, and criminal versatility.

Burley, D. T., Gray, N. S., & Snowden, R. J. (2019). Emotional modulation of the pupil response in psychopathy. Personality Disorders: Theory, Research, and Treatment, 10(4), 365–375.



Burley, D. T., Gray, N. S., & Snowden, R. J. (2017). As far as the eye can see: Relationship between psychopathic traits and pupil response to affective stimuli. PLoS ONE, 12, e0167436.

Vinnars, B., & Barber, J. P. (2008). Supportive-expressive psychotherapy for comorbid personality disorders: A case study. Journal of Clinical Psychology, 64(2), 195–206.

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