What he's saying, basically, is that they know there are differences, but given how fraught gender norms can be, it's virtually impossible to say whether women and men are born with different ways of perceiving faces, or they're conditioned by society to perceive faces differently.
But one thing's certain: Women read lips better.
Can eye movements help detect disease?
The study wasn't just helpful in identifying yet another difference between males and females; it may be useful in treating disorders.
"Eye movements can be used to infer many characteristics of the observers, like their cognitive workload (particularly useful during demanding tasks such as air traffic control), the task at hand, or here, their gender," Dr. Coutrot added.