This is a sequence of animations broken into six parts on the topic of Psychology of Hunger.
  1. Part 1 of 6:
  2. The on-screen text says "Although hunger is a biological drive, social and environmental factors also influence eating. For example, hunger can be triggered by exposure to food cues, such as television commercials for delicious-looking meals, mouth-watering aromas coming from the kitchen, or the sight of a favorite restaurant sign."
  3. Part 2 of 6:
  4. The on-screen text says "Another factor influencing hunger and eating is the palatability of available food. As you might expect, the better food tastes, the more we tend to consume. This principle is not limited to humans, as many animals are also influenced by the palatability of available food."
  5. Part 3 of 6:
  6. The on-screen text says "A powerful determinant of the amount eaten is the quantity of food available. The more food people are served, the more they tend to eat. Larger containers and restaurant portions tend to foster overeating."
  7. Part 4 of 6:
  8. The on-screen text says "Humans and animals increase their consumption when a greater variety of foods are available. As you eat a specific food, its appeal gradually declines. This phenomenon is called sensory-specific satiety. If only a few foods are available, their appeal can decline quickly. But if many foods are available, people can keep shifting to new foods and eat more overall. This is why people are especially likely to overeat at buffets."
  9. Part 5 of 6:
  10. The on-screen text says "Social contexts also influence eating. On average, individuals eat more when they eat with other people as opposed to eating alone. The more people present, the more food people tend to eat. When two people eat together, they tend to reciprocally adjust their intake, eating roughly the same amount, although most are not aware of this adjustment process."
  11. Part 6 of 6:
  12. The on-screen text says "Stress has varied effects on eating, as some individuals eat less and some are unaffected, but estimates suggest that 40%-50% of people increase their food consumption in times of stress. In many people, stress also appears to foster a shift toward less healthy food choices, such as loading up on sweets and fatty foods."
  13. End of animated sequence.