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PSYCHOLOGICAL PERSPECTIVES ON OBESITY

Core Focus: Self-Control Failures

The psychological perspective on obesity focuses on cognitive and behavioural factors affecting eating patterns, particularly the regulation of eating behaviour and the role of self-control failures.

Restraint Theory Mechanics

Restraint theory suggests that obesity can result from cognitive attempts to restrict food intake, which paradoxically increase the risk of overeating.

1

Dietary Restraint

Individuals may adopt strict dieting rules to control or reduce eating (e.g., "No carbs after 6 pm"). This is a form of cognitive control attempting to override natural hunger.
2

Cognitive Effort and Restriction

The effort to restrain eating places individuals in a fragile state, where the cognitive load of dieting can lead to lapses and overeating.
3

Dietary Disinhibition

When restraint is broken (due to stress, emotional triggers, or tempting food), individuals often binge eat or lose control, leading to weight gain. The restrained eater is thus vulnerable to cycles of restriction followed by disinhibited overeating.

Triggers of Disinhibition

Disinhibition is the tendency to overeat in response to various cues that reduce cognitive control.

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Emotional Disinhibition

Negative emotions (stress, anxiety, boredom) can provoke eating in the absence of hunger.
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External Disinhibition

Eating triggered by environmental cues like smell, sight, or social settings rather than internal hunger.
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Habitual Patterns

Over time, behavioural patterns of disinhibition can become entrenched, promoting habitual overeating.

The Boundary Model (Herman & Polivy)

Developed by Herman and Polivy, the boundary model integrates physiological and psychological factors to explain eating behaviour regulation.

1

Boundaries of Eating

Normal eaters have an internal physiological boundary between hunger and fullness, guiding food intake.
2

Boundary of Dietary Restraint

Restrained eaters impose an additional cognitive boundary—a threshold of permissible eating they try not to cross. This boundary creates a psychological limit distinct from biological needs.
3

Breaking the Boundary

When restrained eaters "break" this cognitive boundary (e.g., by eating a forbidden food), this leads to disinhibited eating, as the cognitive rules controlling intake are abandoned, resulting in overeating and possible binge eating.

The Paradox of Restraint

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If I successfully restrain my eating, am I guaranteed to lose weight?
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No. This model explains why dieting can sometimes lead to increased vulnerability to overeating and weight gain.

Eater Types Comparison

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Non-Restrained EatersPeople without restraint rely on hunger and satiety signals, maintaining more stable eating patterns.
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Restrained EatersHigh risk of disinhibited eating. Disinhibition undermines efforts to maintain dietary restraint and contributes to obesity development.

Summary & Conclusion

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Key Takeaway: Psychological explanations for obesity highlight how attempts at dietary restraint can paradoxically lead to cycles of disinhibited eating and weight gain. Disinhibition triggered by emotional or external cues and a fragile cognitive control system result in overeating.

Psychological Perspectives on Obesity Deck
Term
Psychological Perspective on Obesity

What does the psychological perspective on obesity focus on?

Answer
Key Focus

Cognitive and behavioural factors affecting eating patterns, especially self-control failures.

Term
Restraint Theory

What is restraint theory?

Answer
Theory

The idea that attempts to cognitively restrict food intake can paradoxically increase overeating risk.

Term
Dietary Restraint

What is dietary restraint?

Answer
Definition

Strict dieting rules aimed at controlling or reducing eating, overriding natural hunger.

Term
Cognitive Effort & Dietary Restraint

How does cognitive effort relate to dietary restraint?

Answer
Explanation

High cognitive effort in restraining eating creates vulnerability to lapses and overeating.

Term
Dietary Disinhibition

What happens during dietary disinhibition?

Answer
Definition

When restraint breaks due to triggers, individuals often binge eat, leading to weight gain.

Term
Emotional Disinhibition

Define emotional disinhibition.

Answer
Definition

Eating in response to negative emotions like stress or boredom, not hunger.

Term
External Disinhibition

What is external disinhibition?

Answer
Definition

Eating triggered by environmental cues like smells or social settings rather than hunger.

Term
Boundary Model

What is the boundary model?

Answer
Model Explanation

A model explaining eating regulation by combining physiological hunger/fullness signals and cognitive eating boundaries.

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Restrained Eaters & Boundary Model

How do restrained eaters differ according to the boundary model?

Answer
Explanation

They impose an additional cognitive boundary to limit eating beyond natural hunger/fullness.

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Breaking the Boundary

What occurs when restrained eaters "break" their boundary?

Answer
Outcome

They abandon cognitive control and often overeat or binge.

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Non-Restrained Eaters

What characterizes non-restrained eaters?

Answer
Characteristics

They rely on internal hunger and fullness cues, maintaining stable eating patterns.

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Cycles of Restraint and Disinhibition

How do cycles of restraint and disinhibition contribute to obesity?

Answer
Explanation

Restraint leads to vulnerability, disinhibition causes overeating, both promote weight gain.

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🌸 Psychological Perspectives on Obesity Quiz

1. What does restraint theory propose regarding dieting and overeating?

Restraint theory suggests strict dieting can paradoxically lead to overeating when cognitive control fails.

2. Which of the following is an example of emotional disinhibition?

Emotional disinhibition involves eating triggered by negative emotions rather than hunger.

3. According to the boundary model, what happens when a restrained eater “breaks” their cognitive boundary?

Breaking the boundary in restrained eaters leads to disinhibited, often excessive eating.

4. Non-restrained eaters maintain eating patterns by relying on:

Non-restrained eaters depend on natural internal signals for hunger and fullness to guide food intake.

5. Which factor contributes to weight gain according to psychological perspectives on obesity?

Failure in cognitive control (restraint) followed by disinhibited overeating promotes weight gain.

📊 Results

  • Notes and Quiz
  • Psychology
  • AS & A Level
  • Psychological Approaches
  • AQA