According to the researchers, teaching people to increase feature scanning may be one way to help improve their memory for faces.
The findings may help to shed light on long-standing questions about why some people can remember faces easily while others quickly forget the face of someone they’ve just met.
“The way we move our eyes across a new individual’s face affects our ability to recognize that individual later,” explains Jennifer Heisz, a research fellow at the Rotman Institute at Baycrest Health Sciences and newly appointed assistant professor in the Department of Kinesiology at McMaster University in Canada.
Heisz co-authored the paper with David Shore, psychology professor at McMaster, and psychology graduate student Molly Pottruff.
“Our findings provide new insights into the potential mechanisms of episodic memory and the differences between the sexes. We discovered that women look more at new faces than men do, which allows them to create a richer and more superior memory,” Heisz says.
Eye tracking technology was used to monitor where study participants looked — be it eyes, nose or mouth — while they were shown a series of randomly selected faces on a computer screen. Each face was assigned a name that participants were asked to remember.
One group was tested over the course of one day, another group tested over the course of four days.
“We found that women fixated on the features far more than men, but this strategy operates completely outside of our awareness. Individuals don’t usually notice where their eyes fixate, so it’s all subconscious,” explains Heisz.
The implications are exciting, she says, because they suggest that anyone can be taught to scan more and potentially have better memory.
“The results open the possibility that changing our eye movement pattern may lead to better memory,” says Shore. “Increased scanning may prove to be a simple strategy to improve face memory in the general population, especially for individuals with memory impairment like older adults.”
This research was supported by the Natural Sciences and Engineering Research Council of Canada — Canada Graduate Scholarships (NSERC-CGS), as well as a Discovery Grant. Further support was supplied through a Premier’s Research Excellence Award and a New Opportunities Award from the Canada Foundation for Innovation and the Ontario Innovation Trust.
For more information about this study, please contact: Jennifer J. Heisz at [email protected].
The APS journal Psychological Science is the highest ranked empirical journal in psychology. For a copy of the article “Females Scan More Than Males: A Potential Mechanism for Sex Differences in Recognition Memory” and access to other Psychological Science research findings, please contact Anna Mikulak at 202-293-9300