Tuesday, September 14, 2010
Duration Affects Purchases
Nature Neuroscience reports that when deciding between two snacks on the shelf, you will probably choose the one you look at just a fraction of a second longer.
In one study, students fasted for three hours, before rating the tastiness of snack foods and then chose between snack foods they had rated as more or less equally desirable. Researchers tracked the student’s eye movements.
Students looked back and forth several times, usually glancing first at the snack on the left. 70% of the time they selected the snack they looked at for .5 seconds longer.