Consumer Behaviour and the Buying Decision Process
What this domain tests
This domain tests the factors that shape what a shopper buys, the five-stage decision process, types of buying behaviour, and the difference between consumer and business buying.
Core rules and concepts
- Factors influencing consumers: cultural (culture, subculture, social class), social (reference groups, family, roles and status), personal (age, occupation, income, lifestyle, personality), psychological (motivation, perception, learning, beliefs and attitudes).
- Maslow's hierarchy in order: physiological, safety, social, esteem, self-actualisation. Lower needs usually dominate until satisfied.
- Perception is selective - selective attention, selective distortion and selective retention explain why shoppers ignore most in-store messages.
- Five-stage process: need recognition → information search → evaluation of alternatives → purchase decision → post-purchase behaviour. The stages are not always followed in full; habitual purchases skip search and evaluation.
- Types of behaviour: complex (high involvement, big brand differences), dissonance-reducing (high involvement, few differences), habitual (low involvement, few differences), variety-seeking (low involvement, many differences).
- Post-purchase: cognitive dissonance is doubt after a costly choice; satisfaction builds repeat purchase and word of mouth.
- Business buying differs: derived demand, fewer but larger buyers, professional purchasing, negotiation, and multiple buying influences.
Worked example
A student buying a ₹18,000 smartphone moves through all five stages: the old phone's battery fails (need recognition); she reads reviews and asks friends (information search); she compares three models on camera, battery and warranty (evaluation); she chooses one but the retailer's exchange offer finally settles it (purchase); after a week she notices heating and either complains or regrets the choice (dissonance). Marketing response at each stage differs: problem-detection ads, comparison content, point-of-sale offers, and reassuring after-sales service. Note the exchange offer: a marketing stimulus changed the final decision even though brand evaluation was already complete.
Traps that cost marks
- Placing price under social factors - price is personal/economic and also a marketing stimulus.
- Writing that evaluation always ends in purchase; friends' opinions and situational factors can intervene.
- Mixing habitual buying with brand loyalty - loyalty can coexist with high involvement.
- Treating Maslow's levels as strictly sequential for every purchase.