Consumer Markets & Consumer Buyer Behaviour
What consumer markets are, the stimulus–response (black box) model, cultural, social, personal and psychological influences, buying roles, the 5-stage buyer decision process, the four buying behaviour types, and Sri Lankan and global consumer trends.
▶Lecture videos
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Consumer Behaviour – Part I
Consumer markets, the buyer behaviour model and influencing factors.
00:02Introduction: customer vs consumer02:13Types of buying behaviour and their importance03:19Model of consumer buying behaviour: stimuli → black box → response05:20Marketing and other stimuli07:29The buyer's black box: the iceberg analogy09:42Factors influencing behaviour: cultural, social, personal, psychological11:52Culture and subcultures (Sri Lankan examples)13:58Social factors: reference groups, opinion leaders, family15:05Personal factors: life-cycle stage, occupation, lifestyle17:09Psychological factors: motivationConsumer Behaviour – Part II
The decision process and types of buying behaviour.
00:04Part II: psychological factors continued01:07Freud: the unconscious03:08Maslow's hierarchy: physiological, safety, social, esteem, self-actualisation05:09Esteem: comparing yourself with others07:50Perception: selective attention, distortion, retention10:24Learning, beliefs and attitudes11:27The buyer decision process: need recognition12:28Information search and evaluating alternatives13:33Purchase decision and the stages of buyers14:34Values and ethics in consumer behaviour1Why study consumer behaviour?
- Organisations exist to satisfy consumers' needs and wants, and they can only do that by understanding the people who buy, better than competitors do.
- We can't open a head to read the thinking process, so marketers study behaviour instead: behaviour is the outward sign of mental intentions.
- Understanding behaviour makes it easy to match products to needs.
2Consumer markets
- A consumer market is the system through which individuals and households buy goods and services for personal consumption, not resale. Buying groceries or paying for a car wash both count.
- The more people actively buy, the more active the consumer market.
Consumers differ in tastes and habits along four sets of characteristics (the same as the segmentation bases):
| Characteristic | Includes | Example |
|---|---|---|
| Demographic | Gender, age, ethnicity, income, occupation, education, household size, religion, generation, nationality, social class | Age bands 18–24, 25–34, 35–54, 55–65, 65+; a phone aimed at 18–24-year-olds on mid incomes |
| Psychographic | Interests, activities, opinions, values, attitudes | Prenatal magazines for expectant mothers; martial-arts gear; insights from focus groups |
| Behaviouristic | Usage rate, brand loyalty, user status, benefits sought | Heavy, medium and light users; brand loyalists |
| Geographic | Market size, region, population density, climate | Beachwear sells more in warm climates; regional food tastes |
3The black box model (stimulus → response)
STIMULI BUYER'S BLACK BOX RESPONSES
Marketing: Product, → Buyer characteristics: → Product choice
Price, Place, Cultural · Social Brand choice
Promotion Personal · Psychological Dealer choice
Other: Economic, Buyer decision process: Purchase timing
Technological, Problem recognition → Search → Purchase amount
Political, Cultural Evaluation → Decision → Post-purchase
- Stimuli: the 4 Ps plus other environmental stimuli (economic, technological, political, cultural).
- Desired responses: buying or not buying a product, buying at a particular place, buying from a particular dealer.
- The challenge: people don't respond uniformly to the same stimuli at different times, because of the buyer's black box: their characteristics and decision process. Marketers try to understand what goes on inside it.
4Factors influencing consumer behaviour
1. Cultural factors
- Culture is the most fundamental determinant of buyer behaviour: the sum of learned beliefs, values and customs that direct the behaviour of a society's members.
- Subculture is a more homogeneous group within a culture, with its own values, customs and traditions.
- Social class is a relatively homogeneous, enduring, hierarchically ordered division whose members share values, interests and behaviour.
2. Social factors
Reference groups influence attitudes and behaviour, directly or indirectly:
Reference groups
├── Membership groups
│ ├── Primary (family, friends, neighbours: frequent, informal)
│ └── Secondary (clubs, professional bodies: formal, less frequent)
└── Non-membership groups
├── Aspirational groups (you want to belong)
└── Dissociative groups (you want to avoid)
They influence buyers in three ways:
- Expose the person to new behaviours and lifestyles.
- Influence attitudes and self-concept.
- Create pressure to conform, which affects product and brand choices.
- Family is the most important consumer buying organisation and the nucleus of buying units. It socialises people and instils buying habits.
- Roles and statuses: the roles people play give them status, which influences purchases.
3. Personal factors
- Age and life-cycle stage
- Occupation and economic circumstances: spendable income, savings, debts, borrowing power, attitude to spending vs saving
- Lifestyle: the pattern of living in activities, interests and opinions (Kotler, 2000)
- Personality and self-concept: distinguishing psychological characteristics leading to relatively consistent, enduring responses (Kotler, 2000). Consumers express their personality through products.
4. Psychological factors
- Motivation: a need drives goal-directed action. Consumers are need-driven. Theories: Maslow's hierarchy of needs, Herzberg's two-factor theory, McClelland's need theory.
- Learning: changes in behaviour arising from experience.
- Beliefs and attitudes:
- A belief is a descriptive thought.
- An attitude is an enduring favourable or unfavourable evaluation, feeling and action tendency towards an object or idea.
- Perception: the internal representation of the external world. "Consumer perception should be the marketer's reality."
Initiator (suggests the purchase) → Influencer → Decider → Buyer → User → Discarder.
Example: a child asks for a laptop (initiator); a cousin recommends a brand (influencer); a parent decides (decider) and pays (buyer); the child uses it (user) and eventually disposes of it (discarder).
5The buyer decision process — 5 stages
- Need / problem recognition
- Information search
- Evaluation of alternatives
- Purchase decision
- Post-purchase behaviour
| Stage | What happens | Marketer's job |
|---|---|---|
| 1. Need recognition | The buyer feels a gap between their actual and desired state ("I'm hungry, I need food"). Triggered by internal stimuli (hunger, thirst) or external stimuli (ads, word of mouth) | Trigger and remind of the need |
| 2. Information search | Personal sources (family, friends, neighbours), commercial (ads, salespeople, dealers, packaging, displays), public (mass media, consumer-rating organisations), experiential (handling, examining, using: the most decisive and trusted) | Be present in the sources customers trust |
| 3. Evaluation of alternatives | Brands in the choice set are compared on attributes, importance, brand beliefs and expected satisfaction | Show how your brand wins on the attributes that matter |
| 4. Purchase decision | Buy the best brand. But the decision is affected by others' attitudes and unexpected situational factors | Remove barriers; use point-of-sale persuasion |
| 5. Post-purchase behaviour | Satisfied or dissatisfied. Cognitive dissonance: "Did I make the right decision?" | Reassure buyers: follow-ups, warranties, good after-sales service |
6Four types of buying behaviour
The type depends on involvement (how important or expensive the purchase is) and differences between brands:
| High involvement | Low involvement | |
|---|---|---|
| Significant differences between brands | Complex buying behaviour | Variety-seeking behaviour |
| Few differences between brands | Dissonance-reducing behaviour | Habitual buying behaviour |
| Type | Description | Example | Marketer's response |
|---|---|---|---|
| Complex | Highly involved + big brand differences. The buyer gathers detailed information | Motorcycle, laptop, diamond necklace | Provide detailed information on attributes; educate |
| Variety-seeking | Low involvement + significant differences. Switches brands for variety, not dissatisfaction | Trying a different washing detergent or biscuit each time | Market leader: dominate shelf space and remind. Challengers: discounts, free samples, heavy advertising |
| Dissonance-reducing | High involvement + few differences. Buys fairly quickly, then may feel dissonance | Floor tiles, carpets | After-sale reassurance about the choice |
| Habitual | Low involvement + few differences. Buys quickly out of habit | Toothpaste, salt, sugar | Price promotions, repetition, availability |
7Contemporary trends — Sri Lanka & global
Sri Lanka (Nielsen consumer insights, 2015–2017)
- Consumer confidence fell: from 87 (Oct 2015) to 46 (Jul 2016), recovering to 54 (Dec 2016), then flat. 80% expected job prospects not to improve, 90% expected unsatisfactory personal finances, and 92% expected purchasing power to fall.
- Rising food, utility and education costs: people cut usage of personal care (e.g. shampoo), and penetration fell in some hygiene categories. FMCG firms missed their budgets.
- Top three issues: political stability, utility bills, children's education costs. Drought hit 14 districts, and imported basics (rice, dhal, sprats, sugar) rose with currency swings.
- Moving away from supermarkets: supermarket shoppers fell from 23% (2015) to 19% (2016), while grocery shopping rose from 46% to 53%. Consumers became more rational.
- Local companies growing: 67% of incremental sales came from local firms vs 55% for multinationals, helped by quality parity.
- Internet use rising to 32% penetration, with companies spending proportionately more on digital media.
Global (Euromonitor Global Consumer Trends 2019)
| Trend | Meaning |
|---|---|
| Age agnostics | Older people want to look and act younger; baby boomers (1946–64) embrace tech and have more purchasing power |
| Back to basics: less is more | Rejecting mass-produced items for simpler, authentic products; buying local |
| Conscious consumption | Mindful buying that considers people, animals and the environment |
| Digitally together | Digital tech creates new collective experiences; VR spreads beyond gaming |
| Everyone is a specialist | Informed consumers use reviews and social media and need transparency |
| "Let me do it" | DIY: consumers solve problems themselves; practical, organic solutions |
| A world without plastic | Rejecting single-use plastic and microbeads; paying more for recyclable packaging |
| "I want it now!" | Speed and convenience: will pay more to save time (5G, big data, AI) |
| Loving single life | Over-50 singles with spending power; single households growing fastest |
Expect:
- Draw and explain the black box model
- Explain the four groups of factors with examples (especially reference groups)
- Buying roles
- The 5-stage decision process, including the information sources and cognitive dissonance
- The 4 buying behaviour types (draw the 2×2 grid with examples)
- Contemporary trends in Sri Lanka and globally
8Quiz 05: model answer
From Week 06/Quiz 05.docx in the Marketing folder.
Question: Take a real buying situation you've experienced and discuss each stage of the buying process in relation to it. Did you go through these stages? How did you act in each one?
What the model answer covers:
- Describe the buying situation
- Problem recognition, with your own example
- Information search, with your own example
- Evaluation of alternatives, with your own example
- Purchase decision, with your own example
- Post-purchase evaluation, with your own example
9Quick revision sheet
| Concept | Remember it as |
|---|---|
| Consumer market | Individuals and households buying for personal use |
| Black box model | Stimuli (4P + environment) → buyer characteristics + decision process → responses (product, brand, dealer, timing, amount) |
| Cultural | Culture (most fundamental), subculture, social class |
| Social | Reference groups (membership: primary/secondary; non-membership: aspirational/dissociative), family, roles & status |
| Personal | Age & life cycle, occupation & economics, lifestyle (AIO), personality & self-concept |
| Psychological | Motivation (Maslow, Herzberg, McClelland), learning, beliefs & attitudes, perception |
| Buying roles | Initiator, influencer, decider, buyer, user, discarder |
| Decision process | Need → search (personal, commercial, public, experiential) → evaluate → decide → post-purchase (dissonance) |
| Buying behaviours | Complex · variety-seeking · dissonance-reducing · habitual |
| Sri Lanka | Confidence falling, costs rising, supermarket → grocery, local brands up, internet 32% |
?Self-check quiz
11 questions on this week. Answer them all, then press Check my answers. Your best and latest scores are saved and shown on the subject page.