MKF2111 · Buyer Behaviour
The Consumer Decision Process I: Problem Recognition, Search & Low-Effort Choice
This chapter starts the Judgment & Decision-Making block: how a need is triggered (problem recognition = the gap between actual and ideal state past an awareness threshold), how consumers search (internal vs external, biased by confirmation bias), and how brands move through the consideration-set funnel. It then covers low-effort choice — the representativeness and availability heuristics and simplifying tactics. The oral often asks you to name a heuristic, spot the error, and give the marketer's countertactic.
What this chapter covers
- 011. Problem recognition: perceived gap between actual state and ideal state, exceeding the awareness threshold
- 022. How marketers trigger it: raise the ideal state or create dissatisfaction with the actual state
- 033. Internal search (memory) vs external search (retailers, media, WOM, independent, experiential)
- 044. Search drivers (MAO): involvement & perceived risk, knowledge, time & information complexity
- 055. Confirmation bias: over-weighting information that confirms existing beliefs → implications for loyalty
- 066. The set funnel: brand universe → awareness set → consideration (evoked) set → choice; minus inept & inert sets
- 077. Low-effort heuristics: representativeness (similarity to a prototype, ignore base rates) and availability (ease of recall)
- 088. Simplifying choice tactics: brand loyalty, habit, price, affect, variety-seeking, operant conditioning
Oral-exam answer: name the heuristic, the error, and the countertactic
- GOOD: heuristic named, error statedDEFINE and identify. This is the representativeness heuristic — judging likelihood by similarity to a prototype (the leader) while ignoring the 20% base rate. The error is over-weighting resemblance and under-weighting the real success rate.
- GOOD: second heuristic + exampleName the other heuristic. The availability heuristic judges frequency by how easily examples come to mind — e.g. assuming plane crashes are common because they are vivid and memorable.
- OUTSTANDING: a tactic per heuristicGive the marketing use of each (the IMPLICATION). To gain from representativeness, package near a positive prototype (a store-brand that 'looks like the leader'); to fight a wrong judgment, supply base-rate data. To exploit availability, seed vivid, easily-recalled positive experiences and word of mouth.
Key terms
- Problem recognition
- The perceived gap between a consumer's actual state and their ideal state that is large enough to exceed the awareness threshold and trigger a decision. Marketers stimulate it by raising the ideal state or creating dissatisfaction with the actual state.
- Internal vs external search
- Internal search retrieves information from memory (known brands, attributes, experiences); external search gathers it from retailers, media, interpersonal sources (reviews/WOM), independent sources and experience. Drivers are MAO — involvement/risk, knowledge, and time/information complexity.
- Confirmation bias
- The tendency to over-weight information that confirms existing beliefs and discount disconfirming information — a strong driver of brand loyalty and a barrier to switching.
- Consideration (evoked) set
- The small group of brands a consumer actively considers buying, drawn from the wider awareness set; brands not considered fall into the inept set (rejected) or the inert set (treated with indifference).
- Representativeness heuristic
- Judging the likelihood of something by how similar it is to a prototype or typical case, while ignoring base-rate information about how common the outcome actually is.
- Availability heuristic
- Judging the frequency or probability of an event by how easily examples come to mind; vivid, recent or emotional examples are over-weighted (e.g. fearing rare but dramatic risks).
The Consumer Decision Process I: Problem Recognition, Search & Low-Effort Choice FAQ
What's the difference between the awareness set, consideration set, inept set and inert set?
Starting from all brands (the universe), the awareness set is the brands the consumer knows; from those, the consideration (evoked) set is the few they would actually buy. The inept set is brands they know but reject; the inert set is brands they know but feel indifferent about. The marketer's job is to move a brand into the consideration set, not just awareness.
Why does confirmation bias matter for brand loyalty?
Because loyal customers over-weight information that confirms their existing favourable belief and discount competitors' claims, which protects the incumbent. For a challenger brand it means awareness alone isn't enough — you must give a strong, hard-to-dismiss reason that breaks through the bias to enter the consideration set.
How are the two heuristics corrected?
Both are corrected by reminding people of base rates and real frequencies. For representativeness, supply the actual success/failure rate so resemblance doesn't dominate. For availability, present balanced frequency data so a vivid example doesn't distort the estimate. Marketers can exploit the heuristics (positive prototype, vivid memorable experiences) or counter them (base-rate evidence).
How is this chapter examined?
Often as a name-the-heuristic-and-apply task: identify representativeness vs availability in a scenario, state the error, and give the marketing tactic in both directions. Problem recognition and the set funnel come up as explain-and-apply, e.g. how a marketer triggers a need or moves a brand into the consideration set.
Exam move
Hold the decision process as a sequence — problem recognition → search → low-effort choice — and have a one-line definition and example for each stage. Drill the two heuristics until you can, on demand, name it, state the error (ignored base rate / vividness), and give the marketing tactic both ways (exploit and correct); this 'both directions' move is what reaches the top band. Memorise the four sets (awareness, consideration, inept, inert) and rehearse how a marketer pushes a brand from awareness into consideration, since that is the practical payoff. Tie search back to MAO (involvement, knowledge, opportunity) to show cross-topic linking, and close each answer with the marketer's action.
