Caption: Seth Pollak, associate professor of psychology, psychiatry and pediatrics and researcher at the Waisman Center for Human Development.
Photo by: Michael Forster Rothbart
Date: March 2004
High Resolution JPEG 300 DPI

Caption: This chart of faces expressing emotions ranging from happy to fearful (lines 1-2); happy to sad (lines 3-4); angry to fearful (lines 5-6); and angry to sad (lines 7-8), was part of a study by Seth Pollak, assistant professor of psychology. Pollak examined how children who had experienced physical abuse categorized facial expressions differently than children who had not been abused. The study was published in the June 18 edition of the Proceedings of the National Academy of Sciences.
Photo by: Seth Pollak, courtesy PNAS
Date: 6/02
200 DPI JPEG

Caption: A child views a series of faces expressing happy, angry or fearful emotions as part of an earlier study indicating that child abuse can affect brain development. Seth Pollak, assistant professor of psychology, measured increases in brain electrical activity as children viewed the images; he found that children who were maltreated, compared to those who had not been, produced dramatically stronger and longer-lasting responses to angry faces.
Photo by: Jeff Miller
Date: 3/99
High Resolution JPEG 300 DPI