Aim: To examine if facial expressions would have an effect on positive and negative moods (facial feedback)
Sample: 131 undergraduate physiology students
Methodology: The experiment was described as a study of how accurately people can communicate facial expressions. Participants were shown a series of photographs and asked to mimic the expressions. One group was given a mirror to look into and the other was not. There was also a control group that did not mimic the expressions and instead were asked to keep a neutral face throughout the study. Mood assessments were taken at the beginning and end of the experiment.