Alternative views of consumer behaviour — Edexcel A-Level Economics A
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Alternative views of consumer behaviour explained
This topic examines why consumers may not behave rationally.
Read the full explanation
Rational choice assumes consumers weigh costs and benefits to maximise utility. However, other people's behaviour can influence choices through social norms, herd behaviour, or conspicuous consumption; for example, buying a product because friends have it. Habitual behaviour means repeated purchases become automatic, so consumers may not reassess alternatives; for instance, always buying the same brand without comparing prices. Consumer weakness at computation refers to difficulties in calculating or comparing complex options, such as choosing a mobile phone tariff with many variables, leading to suboptimal decisions. These factors mean demand may not respond to price changes as predicted by rational models. The specification requires understanding these three reasons and their implications for consumer behaviour.
Your focus
- Explain how other people's behaviour can influence consumer choices.
- Analyse the importance of habitual behaviour in consumer decision-making.
- Evaluate the impact of consumer weakness at computation on purchasing decisions.
Alternative views of consumer behaviour exam tips
Marking Points
- Consumers may not behave rationally because of the influence of other people's behaviour, such as social norms or herd behaviour.
- Habitual behaviour can lead consumers to repeat purchases without rational re-evaluation.
- Consumer weakness at computation means consumers may struggle to calculate and compare complex options, leading to irrational choices.
- These factors can cause demand to deviate from predictions of rational utility maximisation.
Examiner Tips
- 💡Use real-world examples to illustrate each reason, such as buying a popular phone due to peer pressure.
- 💡Link each reason to how it might affect the demand curve or elasticity.
- 💡In multiple-choice questions, eliminate options that describe rational behaviour rather than irrational influences.
- 💡Ensure you can distinguish between the three reasons and apply them to different markets.
Common Mistakes
- Misunderstanding: irrational behaviour means consumers never consider costs and benefits. Correction: it means they may be influenced by other factors, but they still may consider some costs and benefits.
- Misunderstanding: habitual behaviour is the same as addiction. Correction: habitual behaviour is routine repetition, not necessarily physical dependence.
- Misunderstanding: weakness at computation only applies to maths. Correction: it includes difficulty in processing complex information and comparing alternatives.
- Misunderstanding: other people's behaviour only affects young people. Correction: it can affect consumers of all ages through social norms and peer influence.