A stationary stance may be a tactic employed by psychopaths to hide potential clues about their personality or intentions given away by body language.
The new study suggests looking at a woman's head movement during conversation as a possible indicator of psychopathy, a trait often associated with antisocial behavior and lack of empathy.
'Nonverbal behaviors (i.e., head dynamics) represent an important, yet understudied, form of communication that may enhance our ability to detect certain forms of psychopathology, including psychopathy,' they say.
For the study, the researchers used an image processing and machine learning tool to automatically extract head movement from recorded interviews of 213 incarcerated women in the US.
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