lecture22ns115 - Lecture 22: Environment Eating III Part I...

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Lecture 22: Environment Eating III Part I I. The Effect of the Number of Foods in Front of you - in US – we like having food separated on our plate: tripartite plate: vegetables, a starch, and a meat - what if one of these foods was removed? - Atkin's diet was mimicked- starch (carbohydrate) removed, subjects only ate vegetables (peas) and protein (chicken) - intake significantly lower - Vegetarian Diet : only starch(rice) and vegetables (peas) → decrease in total amount of food consumed even though food freely available - demonstrates: reduce the number of foods available at a meal, reduce amount you eat (environmental factors) - food variety – big effect on amount you eat → if you eat same food all the time, intake goes down; more variety – intake goes up - diet consisting of a large variety – levintsky thinks : primal behavior: optimal diet – large variety b/c you will not experience a deficiency in many vitamins or minerals, but with the consequence of higher intake II. Number of People you Eat with vs. Total Energy Consumed - Decastro – paid students to keep detailed food diary, w/ questions like “how many people did you eat with?”: more people you eat with, more you will eat - completely social phenomenon – even true of animals that live in groups - therefore, number of people you eat with – determine how much you eat III. Level of Intake of Peers vs. Your Total Energy Consumption - subjects and confederates; certain days: subjects told to eat less than normally would eat but not allowed to talk about food - other days, subjects – told to over eat; also not allowed to talk about the food - when subjects ate less: no effect, confederates ate the same amount but when they ate more the confederates also ate more - ALSO – recent study: speed which other people eat affects rate at which you eat - faster you eat, more you eat - these are social influences effecting eating behavior – not signals - SO amount and rate of food others eat affects amount you eat IV. Looking at Food Prepared outside the Home and Total Energy Intake
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lecture22ns115 - Lecture 22: Environment Eating III Part I...

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