Buyer Behaviour Concepts and Applications in Modern Marketing
Understanding how consumers think, feel, and act is essential for any marketer. This course breaks down the core theories that explain buyer behaviour, illustrates them with real‑world examples, and provides actionable insights for practitioners. By the end of the lesson, you will be able to apply concepts such as the Elaboration Likelihood Model, decision‑making heuristics, perceived risk, schemas, affective forecasting, the attraction effect, the Theory of Reasoned Action, and memory‑enhancing strategies.
1. The Elaboration Likelihood Model (ELM)
Central and Peripheral Routes of Persuasion
The ELM proposes two distinct pathways through which a consumer processes persuasive messages:
- Central route: Activated when motivation and ability are high. Consumers scrutinise the quality of arguments, weigh evidence, and form lasting attitudes.
- Peripheral route: Triggered when motivation is low or the message is complex. Decision‑makers rely on cues such as source attractiveness, celebrity endorsement, or simple heuristics.
Example: When a highly motivated campervan shopper reads a detailed comparison that highlights fuel efficiency, safety features, and price, they are likely to follow the central route, focusing on the strength of the arguments rather than superficial cues.
Key takeaway: High involvement + strong arguments → central processing; marketers should therefore provide clear, evidence‑based content for engaged audiences.
2. Decision‑Making Models for High‑Involvement Purchases
Compensatory Choice Model
In a compensatory model, a consumer evaluates multiple attributes and allows strengths in one area to offset weaknesses in another. This is the most common approach for complex, high‑involvement decisions such as booking a campervan.
- Attributes might include price, sleeping capacity, mileage limit, and extra amenities.
- A higher price can be justified if the vehicle offers superior comfort or advanced safety tech.
Other Models (for contrast)
While the compensatory model dominates high‑involvement contexts, marketers should recognise alternatives:
- Satisficing: The consumer selects the first option that meets a minimum threshold, often used when time is limited.
- Non‑compensatory: A single deal‑breaker (e.g., no air‑conditioning) eliminates an option regardless of other merits.
- Heuristic: Simple rules of thumb, such as “choose the cheapest,” dominate low‑effort decisions.
Understanding which model a target segment employs helps tailor communication—detailed attribute matrices for compensatory shoppers, quick‑glance price tags for heuristic buyers.
3. Perceived Risk in Online Marketplaces
What Drives Perceived Risk?
Perceived risk is the consumer’s expectation of potential loss or uncertainty surrounding a purchase. In peer‑to‑peer platforms like Facebook Marketplace, the most potent source of risk is uncertainty about product condition and seller reliability.
- Absence of warranties or return policies heightens risk.
- Limited visual evidence (e.g., blurry photos) amplifies doubts.
- Seller reputation scores or verified badges can mitigate perceived risk.
Marketers can reduce perceived risk by offering guarantees, transparent return processes, and third‑party verification.
4. Schemas and Low‑Involvement Choices
How Schemas Simplify Decision Making
A schema is a mental framework that organises knowledge about a product category. For low‑involvement purchases—like grabbing a late‑night McDonald’s meal—a well‑established schema allows the consumer to act quickly without exhaustive evaluation.
- The McDonald’s schema includes expectations of taste, speed of service, and price.
- Because the schema is familiar, the consumer can bypass deliberation and move straight to purchase.
Brands that consistently reinforce positive schemas enjoy smoother purchase pathways and higher repeat rates.
5. Affective Forecasting
Predicting Future Emotions
Affective forecasting refers to the process of predicting how we will feel after a future event. When a traveler anticipates that watching the aurora borealis will be exhilarating, they are engaging in affective forecasting.
Marketers can leverage this by:
- Highlighting the anticipated emotional payoff of an experience (e.g., “Feel the awe of the Northern Lights”).
- Using vivid imagery and storytelling to make the imagined emotion more concrete.
Accurate affective forecasts increase purchase intention, especially for experiential products.
6. The Attraction Effect (Decoy Effect)
Making a Target Option More Appealing
The attraction effect occurs when a third, less attractive option (the decoy) shifts preference toward a target product. In a campervan choice set, an inferior model—perhaps with the same price as a mid‑priced option but far fewer features—makes the mid‑priced campervan appear more attractive.
- Decoy attributes are deliberately chosen to be just slightly worse than the target on key dimensions.
- Consumers perceive greater value in the target because the decoy highlights its strengths.
Strategic placement of a decoy can boost conversion rates for premium or mid‑range offerings.
7. Theory of Reasoned Action (TRA)
Subjective Norms and Behavioural Intentions
TRA posits that behavioural intention is shaped by two primary components: attitude toward the behaviour and subjective norms. In group travel bookings, subjective norms—friends’ or family’s expectations—often dominate the decision.
- If a peer group values eco‑friendly trips, the intention to book a sustainable travel package rises.
- Marketers can amplify subjective norms by showcasing user‑generated content, testimonials, and social proof.
While perceived behavioural control is part of the extended Theory of Planned Behaviour, TRA focuses on the normative influence for group‑based purchases.
8. Enhancing Memory Retention for Brands
Repetition + Emotional Relevance
Research shows that the most effective way to cement a brand in a consumer’s memory is through repeated exposure combined with emotional relevance. For a meal‑kit service like HelloFresh, this means delivering consistent messaging that also triggers feelings such as convenience, family bonding, or culinary adventure.
- Use multi‑channel campaigns (email, social media, TV) to increase frequency.
- Pair product benefits with emotionally charged narratives (e.g., “Create unforgettable dinner moments”).
Technical specifications alone rarely create lasting memory; they must be wrapped in an affective context.
9. Integrating the Concepts: A Practical Checklist
- Identify involvement level: Use central‑route messaging for high‑involvement (campervan, aurora trips) and peripheral cues for low‑involvement (late‑night snacks).
- Choose the appropriate decision model: Emphasise attribute trade‑offs for compensatory shoppers; provide quick‑filter options for heuristic users.
- Mitigate perceived risk: Offer guarantees, transparent seller info, and social proof on platforms like Facebook Marketplace.
- Leverage schemas: Reinforce familiar brand scripts through consistent visual and verbal cues.
- Apply affective forecasting: Paint vivid pictures of future emotional states to boost desire.
- Use the attraction effect wisely: Introduce a decoy that makes the desired product look like the best value.
- Activate subjective norms: Highlight peer approval and community endorsement for group‑based purchases.
- Boost memory retention: Combine high‑frequency exposure with emotionally resonant storytelling.
By systematically applying these principles, marketers can craft campaigns that resonate with the cognitive and emotional drivers of buyer behaviour.
10. Frequently Asked Questions (FAQ)
When should I use the central route versus the peripheral route?
Use the central route when the audience is highly motivated, has the ability to process information, and the purchase is costly or risky. Use peripheral cues when the audience has low motivation, limited time, or the product is low‑involvement.
Can the attraction effect backfire?
Yes. If the decoy is perceived as manipulative or if it adds cognitive load, consumers may feel distrustful. Test decoys in controlled experiments before full rollout.
How many repetitions are optimal for memory retention?
Studies suggest diminishing returns after 3‑5 exposures within a short period, provided each exposure is emotionally engaging. Over‑exposure can lead to ad fatigue.
