Eating Behaviour

7 important questions on Eating Behaviour

Developmental models of eating behaviour

Focus on development of food preferences in childhood and emphasises the importance of learning and experience. Central concepts in this perspective are exposure, social learning and associative learning.

Human beings need to consume a variety of foods in order to ahve a balanced diet, and yet can sometimes show a fear and avoidance f novel foodstuffs, know as neophobia.

Developmental models of eating behaviour: EXPOSURE

- neophobic responses to food
- but, mere exposure to novel food can change children's preferences
- 8-10 exposures seem needed to shift preferences
- but, as more new foods are added it takes less exposure  
- similarly research indicates that children can identify and are willing to taste vegetables if purchased by their parents.
- Neophobia has been shown to be greater in males than females

Cognitive models of eating behaviour

Emphasises the ways in which an individual's beliefs predict their behaviour. A cognitive approach to food choice focuses on an individual's cognitions and has explored the extent to which cognitions predict and explain behaviour.

For example
- theory of reasoned action (intention to perform)
- theory of planned behaviour (intention to perform + amount of actual control over perform of behaviour)

Food, however, is embedded with a multitude of meanings relating to emotioins, social relationships, communication, etc...
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A weight concern model of eating behaviour

A developmental model: emphasises learning
A cognitive model: emphasises beliefs
A weight concern model incorporates both these dimensions, but highlights the impact that the meanings and roles of food have on eating behaviour.

A new theory of eating behaviour emerged in the late 1970s, known as 'restraint theory', which emphasises the importance of dieting and suggested that restrained eating might be a better predictor of food intake than weight per se. Restrained eating can lead to episodes of overeating.

Restrained eating and overeating

Restraint theory argues that restrained eating results in both under- and overeating. Further research has also shown that restrained eaters often eat more per se.

Several terms have been used to describe the overeating found in restrained eater.

Counterregulation refers to the relative overeating shown following a high-calorie preload compared to a low-calorie one.

Disinhibition has been defined as eating more as a result of the loosening of restraints in response to emotional distress intoxication or preloading.

The what the hell effect has been used to characterise overeating following a period of attempted undereating.

The causal analysis of overeating

Attempting not to eat paradoxically increases probability of overeating. The results of an experiment showed that subjects in the diet condition ate more than both the exercise and the control group, supporting a causal link between dieting and overeating. From this analysis, the overeating shown by dieters is actually caused by attempts at dieting.

Succesful interventions to change eating behaviour

- Two core components central in attempts to change eating behaviour:
1. control and denial (encourage a reduction in food intake, avoid feelings of denial)
2. Meanings associated with food, learned through childhood reflected in adult cognitions (not enhance meanings associated with food that encourage overeating)

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