Facial expressions arise from brain networks that encode slow, context-rich meaning and fast muscle control on different time scales, keeping smiles and threats socially precise.

Photo-Illustration by Chloe Dowling for TIME (Source Images: Klaus Vedfelt—Getty Images, Tim Robberts—Getty Images, Kelvin Murray—Getty Images, Robert Recker—Getty Images, Howard Kingsnorth—Getty ...

Kathleen Bogart has received research funding from the National Institutes of Health and the Moebius Syndrome Foundation. She is a member of the Board of Directors of the Moebius Syndrome Foundation.

New research titled "identifying a facial expression of flirtation and its effect on men" deconstructs the morphology of highly-recognized flirtatious facial expressions used by heterosexual women to ...