Psychology

Harvey Grill and lab members have shown that leptin, a hormone made in fat, acts on the same neurons in the brain that respond to signals arising from food in the stomach. Immunohistochemical images of **green** pSTAT leptin responsive cells, **red** c-Fos stomach distention responsive cells and yellow neurons responsive to both signals

The laboratory of Alan Stocker studies the effects of sequential decision making in perception. For example, the selection of a target affects the subsequent percept of the target's orientation: the perceived angle relative to the distractor orientation is larger than it actually is.

The origin of social relationships: Robert Seyfarth, Dorothy Cheney, and their colleagues have recently found that, among baboons in the Okavango Delta of Botswana, survival is greatest in the offspring of mothers who have the strongest bonds with other females.