Motivation

• Motivation


  Forces that drive our behaviour and encourages us to act.
• Gilchrist and Nesberg (1952)


  Aimed to see if food deprivation would make food appear brighter.
• Method

  • Used two groups of people
  • One group was deprived of food for 24 hours and the second group ate as normal.
  • Shown four slides of meals for 15 seconds.
  • Then asked to adjust lighting on a new photo so it looked like the original.|
• Results

  • The food-deprived participants adjusted the lighting so it was brighter than before
  • Non-deprived group adjusted the lighting similar to the original photo
• Conclusion

  • Hunger is a motivating factor that affects perception.
• Evaluation point 1

  • Weakness- Study involved depriving people of food.
  • Caused participants discomfort.
  • Depriving people of food could be considered an ethical issue.
• Evaluation point 2

  • Strength- Similar studies found similar results.
  • Sanford found that food-deprived people were likely to see vague pictures as food.
  • Similar results increase the validity of Gilchrist and Nesberg's study.