Decision-makers betrayed by their wide eyes.

The article discusses the possible relationship between the dilation of an individual's pupils and decision making. Pupils dilate under certain conditions, such as during the fight-or-flight response or when a room darkens. Topics include an analysis of research by scientists from the University of Melbourne in Australia, investigating the role of the stress hormone noradrenaline, which is implicated in pupil dilation, in human cognition.