Can being “hangry” (hungry and angry) have an effect on intimate relationships? In a recent study done by Bushman and colleagues (2014), researchers looked at glucose levels and aggression levels. Their research suggests that glucose levels affect aggressive impulses and behaviors. Over the course of 21 days, 107 couples took part in a four part experiment. Initially participants took a 10 item questionnaire. Then for 21 consecutive days, the couples measured the glucose levels before breakfast and before bed. The participants were also given a voodoo doll that represented their spouse along with 51 pins. After the 21 days the couples returned to the lab to compete against their spouse, actually a computer; in this competition the winner got to blast their spouse with loud uncomfortable noises, in which they controlled the intensity and duration.
Their findings: lower levels of glucose predicted and increase in aggressive impulses (i.e., more voodoo doll pins and louder and longer uncomfortable noise). Ultimately, this has to do with self-control, the ability to resist an urge or desire. Self-control is a limited resource that depletes over time when you have to resist or override aggressive impulses. One way to prevent depletion of this self-control tank is to keep your glucose levels up.
By Katie Bright
Katie is majoring in Psychology and Human Development. A senior, she plans on graduating in Spring of 2015 and taking some time off school before returning to earn a Masters degree.