Consumer Psychology: Decision-Making Heuristics, Styles, and Systems

Individual and Nomothetic Approaches to Consumer Behavior

• Individual Approach: This perspective treats every consumer as an individual, seeking to find detailed information about personal circumstances to comprehend their behavior fully.

  • Advantage: It allows for a highly specific and accurate account of an individual's behavior.

  • Disadvantage: It lacks the practical aspects of a nomothetic approach (which focuses on general laws of behavior).

• Cultural Considerations: Understanding cultural differences is vital when investigating consumer decision-making.

Heuristics: Mental Shortcuts in Decision-Making

• Definition: Heuristics are mental shortcuts that can help us when making decisions but can lead to errors in judgment.

• Cognitive Strategy: We use these cognitive processing strategies to make decisions more easily. Different heuristics are used for different decisions, and multiple heuristics may be used for a single decision.

• Benefits and Risks: While mostly helpful as aids, they frequently cause errors in judgment.

Availability Heuristic

• Definition: Mental shortcuts based on how easy it is to bring information to mind.

• Function: Often beneficial, such as making us cautious in dangerous situations because negative outcomes are easily recalled.

• Inaccuracy: These can be based on faulty thinking or inaccurate information.

• The Hoyer et al. (2010) Example: If a consumer buys a DVD player that repeatedly breaks, their "available" perception of that brand becomes negative, making future purchases from that brand unlikely.

• Communication Influences: Information from others (e.g., a friend having trouble with a product) creates an availability heuristic even if the instance is isolated.

• Base Rate Information Neglect: Consumers tend to ignore how often something actually occurs (base rate) in favor of information that is readily available or memorable.

Representativeness Heuristic

• Definition: Mental shortcuts allowing judgments based on comparisons with the best-known or "most representative" example of a category.

• Mobile Phone Example: When looking at a new mobile phone, a consumer compares it to the current market leader. If it appears similar, they assume it is also a quality product.

• Manufacturer Tactics: Companies take advantage of this by making product packaging look like established, successful brands so consumers assume the products are similar.

Recognition Heuristic

• Definition: Choosing between items or brands based on familiarity.

• Mechanism: If a consumer recognizes one brand but not the others, they assume the recognized brand has more value and choose it.

• Example: If two mobile phones have the exact same specifications and details, the consumer will choose the familiar brand.

Take-the-Best Heuristic

• Definition: A decision-making strategy where the choice is based on one single "good" reason only, ignoring all other available information.

• Mechanism: The decision-maker identifies one attribute that best discriminates between items.

• Mobile Phone Example: A consumer might focus solely on the quality of the camera, ignoring price, appearance, and size, and choose the phone with the best camera regardless of other factors.

Anchoring

• Definition: The tendency to give the most importance to the first piece of information received (the anchor), regardless of subsequent information gathered.

• Impact: Final decisions are based on adjustments relative to that starting point.

• Car Buying Example: If a consumer sees an average price online for a car, and a dealership offers a price slightly below that, they may "jump at the chance" to buy it. However, if they had seen a lower price originally, they would have bargained for a better deal.

Point of Purchase Decisions

• Influencing Factors: Various factors influence decisions at the specific moment of purchase, including multiple unit prices and suggestive selling.

Multiple Unit Prices

• Definition: A promotion where a reduced price is offered if several of an item are purchased together.

• Example: A bottle of water might be $\$1$ each, but the multiple unit price is $5$ bottles for $\$4$.

• Psychology of Attraction: These make larger purchases look attractive. They work even when no real price difference exists—for example, a sign stating "$6$ cans for $\$3$" is often more effective than a sign saying "$50\text{c}$," even though the unit cost is identical.

• Expectation: Customers generally expect multiple unit prices to be cheaper.

Suggestive Selling

• Definition: An attempt to encourage sales by "suggesting" additions or complementary items to the customer.

• Examples:

  • Displaying earrings that match a necklace and suggesting they be bought together.

  • A waitress suggesting a side salad to go with a main course.

Wansink et al. (1998) Study on Purchase Quantities

• Objective: To examine how point-of-purchase promotions (multiple unit prices and suggestive selling) increase the number of units a consumer buys.

• Methodology: The program included two field experiments and two laboratory experiments.

Field Experiment

• Procedure: A one-week experiment in $86$ stores compared multiple-unit pricing with single-unit pricing.

• Labels: Same-sized labels displayed the original price ($99\text{c}$) alongside either a single-unit promotion ($75\text{c}$) or a multiple-unit price ($2$ for $\$1.50$).

• Products: $13$ common food items were used.

• Results:

  • Multiple-unit prices resulted in a $32\%$ increase in sales compared to the single-unit control.

  • Sales were higher for $12$ of the $13$ products.

  • For $9$ of the products, the difference was statistically significant.

• Limitations:

  • No self-report data was collected; researchers cannot be certain if shoppers were confused or what their feelings were.

  • The data only showed total sales, not the number of items per customer, meaning it is unclear if more people bought items or if existing customers bought higher quantities.

Laboratory Experiment (Suggestive Selling)

• Participants: $120$ undergraduates.

• Scenario: Participants were offered $6$ well-known products at three price levels: Convenience store price (no discount), a $20\%$ discount, and a $40\%$ discount.

• Slogans: Suggestive claims were provided either with or without an explicit product quantity anchor.

  • No Anchor: "Snickers bars - buy them for your freezer."

  • Anchor: "Snickers bars - buy $18$ for your freezer."

• Results:

  • Both suggestive selling and discount levels increased purchase quantity intentions.

  • Suggestive selling was effective even without a discount.

  • Including an explicit product quantity anchor significantly increased intended purchase quantities, even in the absence of a price discount.

Decision-Making Styles

• Influencing Factors (Payne et al., 1993; Hilbig et al., 2012): Use of heuristics is influenced by situational factors (task and context), personal factors (intelligence and personality traits like neuroticism), and time pressure.

Scott and Bruce’s (1995) Five Styles

• Rational: Making decisions in a logical way, considering various options to reach a specific goal.

• Intuitive: Relying on intuition; making decisions that "feel right."

• Dependent: Relying on the assistance and consultation of others.

• Avoiding: Postponing decisions or making them at the last possible minute.

• Spontaneous: Making impulsive and quick decisions.

• Measurement: The instrument does not categorize individuals into a single style but provides scores across all five dimensions.

del Campo et al. (2016) Study: Heuristics and Styles

• Objective: To study the relationship between heuristics and the five decision-making styles.

• Participants: $320$ participants across two experiments (Vienna and Madrid) with an equal split of men and women and a wide age range.

• Task: Choosing between five egg carton options via computer.

  • Stimuli Types:

    1. Take-the-best stimulus: Highlighting a specific attribute (e.g., price $\text{2.99 Euro}$ vs others).

    2. Recognition stimulus: (Familiar brand/standard pricing).

    3. Emotional stimulus: (Triggering emotional response).

    4. Cognitive stimulus: (Required higher processing; included extra info like GM-free, salmonella-free, animal rights tested).

    5. Filler stimulus: (Barn/deep litter raising, lower grade).

• Conditions: Time pressure ($40$ seconds) vs. No time pressure.

• Results:

  • Vienna Experiment: Time pressure caused a significant shift from 'cognitive' to 'take-the-best' options. Those high in 'spontaneous' style chose 'recognition' over 'cognitive.' Unexpectedly, 'rational' style participants chose 'take-the-best' more often than 'cognitive' regardless of time pressure.

  • Madrid Experiment: Evidence for time pressure increasing heuristics was limited. Rational style participants were less likely to choose 'take-the-best' without time pressure, but this reversed when time pressure was applied.

Evaluative Perspectives

Research Methods

• Field Experiments (Wansink et al.): High ecological validity because behavior is observed in natural settings. However, lack of qualitative data (self-reports) means the reasons behind consumer behavior remain unknown.

• Generalizability: Wansink’s lab study used only students, which may not represent the wider population. Households with different budgets and priorities likely exhibit different consumer behaviors.

Issues and Debates

• Applicability to Real Life: This research helps shop owners maximize profit and move excess stock.

• Consumer Empowerment: Understanding these psychological tactics can help consumers evaluate if they actually benefit from offers.

Thinking Fast and Slow (Kahneman & Tversky)

• Theory Origin: Based on Kahneman's (2011) book, summarized by Shleifer (2012).

System 1 Thinking

• Description: "Thinking fast."

• Characteristics: Automatic, intuitive, unconscious, and effortless.

• Reliance: Uses associations and heuristics rather than statistical evidence or logic.

• Frequency: This approach is used for most decisions, including significant ones like purchases and investments.

• Cons: Because it lacks deliberate thought, it frequently leads to errors.

System 2 Thinking

• Description: "Thinking slow."

• Characteristics: Conscious, controlled, and deliberate.

• Reliance: Requires statistical analysis, time, and attention.

• Cons: It is "costly" to use (mentally draining), leading humans to utilize it far more rarely than System 1.

• Predictability: The dominance of System 1 makes accurate predictions about human decision-making very difficult.