Gilchrist and Nesberg motivation

avatar
Created by
Elle Roberts

Cards (6)

  • Aim
    To see what effect food deprivation has on the perception of food related pictures
  • Method
    Experimental group=26 undergraduates volunteered to not eat for 24 hours
    Control group=not deprived of food
    Shown 4 slides of food for 15 seconds each
    After each slide the projector was turned off and turned back on dimmer than before
    Participants had to adjust the brightness to the same as before
  • Results
    Experimental group perceives the images brighter than before
    No effect on the control group
  • Conclusion
    Hunger is a motivating factor that affects perception
    Motivation can affect perceptual set
  • Strength
    High reliability as it’s a controlled lab experiment, a key variable is the length of time (20 hours)
  • Weakness
    Low ecological validity because depriving 26 participants of food for 20 hours has ethical issues and dangerous