Motivation

• Motivation 


  The force that drives your behaviour
• Perceptual set and emotion 


  Emotion can affect how we perceive things.

  Wanting something can increase it's attractiveness.
• Aim


  Gilchrist and Nesburg aimed to find out of food deprivation affects the perception of food pictures
• Method


  Two groups:

  Deprived of food for 20hours

  Control group (not hungry)

  Shown 4 slides of meals, each slide was displayed for 15seconds. Picture shown again but dimmer and participants had to adjust the brightness back to where it was
• Results


  Participants perceived the food as brighter if they had been deprived of food

  Control group didn't perceive the food as brighter
• Conclusion 


  Being deprived of food increased perceptual sensitivity.

  Hunger is a motivating factor affecting the way food is perceived.
• Evaluation


  +Similar studies have similar results, increasing validity

  -Ethical issues- Depriving people of food and water may cause them to feel discomfort

  -Not like everyday life- limited generalisability