Behavioral Biases in Economic Decision Making

Active learning helps students move beyond abstract definitions by experiencing behavioral biases firsthand. When students simulate real-world decisions, they see how cognitive shortcuts shape outcomes, bridging the gap between theory and observable behavior.

• Year 13
• Economics
• 4 activities
• 30 min–45 min

Learning Objectives

1. Analyze how the framing of economic choices influences consumer decision-making, providing specific examples.
2. Evaluate the role of anchoring bias in investment decisions, citing historical market events.
3. Compare and contrast rational economic behavior with behavior influenced by herd mentality.
4. Explain the psychological underpinnings of at least two common cognitive biases relevant to personal finance.

Ready-to-Use Activities

Simulation Game

⏱ 45 min·Small Groups

Simulation Game: Herd Behavior Market Game

Divide class into buyers and sellers trading fictional stocks. Introduce planted 'tips' to trigger herd buying or selling. Groups track prices over 5 rounds, then debrief on how following the crowd inflated or crashed values. Students graph results to quantify irrational swings.

Prepare & details

Explain how cognitive biases like anchoring and framing affect consumer choices.

Facilitation Tip: During the Herd Behavior Market Game, assign roles explicitly and rotate them so students experience both following and leading the herd.

Setup: Flexible space for group stations

Materials: Role cards with goals/resources, Game currency or tokens, Round tracker

• Apply
• Analyze
• Evaluate
• Create
• Social Awareness
• Decision-Making

Inquiry Circle

⏱ 30 min·Pairs

Experiment: Anchoring Estimates

Provide pairs with a high anchor number for estimating UK house prices, then a low one for the same task. Compare group averages and discuss how anchors skewed results. Follow with real data analysis to reveal bias effects.

Prepare & details

Analyze the impact of herd behavior on financial market bubbles and crashes.

Facilitation Tip: For the Anchoring Estimates experiment, provide varied anchors (e.g., high, low, random) and require students to justify their final estimates to reveal bias persistence.

Setup: Groups at tables with access to source materials

Materials: Source material collection, Inquiry cycle worksheet, Question generation protocol, Findings presentation template

• Analyze
• Evaluate
• Create
• Self-Management
• Self-Awareness

Formal Debate

⏱ 35 min·Small Groups

Formal Debate: Framing Consumer Choices

Present product options framed positively or negatively to small groups. Have them vote and justify choices, then reveal identical options. Whole class votes on rational countermeasures like seeking neutral info.

Prepare & details

Differentiate between rational economic behavior and behavior influenced by psychological biases.

Facilitation Tip: In the Framing Consumer Choices debate, assign half the class to argue for one framing and half for the other, then switch sides to deepen perspective-taking.

Setup: Two teams facing each other, audience seating for the rest

Materials: Debate proposition card, Research brief for each side, Judging rubric for audience, Timer

• Analyze
• Evaluate
• Create
• Self-Management
• Decision-Making

Case Study Analysis

⏱ 40 min·Pairs

Case Study Analysis: Bubble Analysis

In pairs, assign historical cases like the dot-com bubble. Identify biases at play, map decision timelines, and propose behavioral interventions. Share findings in a class gallery walk.

Prepare & details

Explain how cognitive biases like anchoring and framing affect consumer choices.

Facilitation Tip: In the Bubble Analysis case study, assign each group a different historical bubble to ensure diverse examples and peer teaching opportunities.

Setup: Groups at tables with case materials

Materials: Case study packet (3-5 pages), Analysis framework worksheet, Presentation template

• Analyze
• Evaluate
• Create
• Decision-Making
• Self-Management

Teaching This Topic

Experienced teachers front-load the psychological foundations before activities, using short video clips or real-world headlines to prime students. Avoid over-explaining the bias after the activity; let students articulate their observations first, then refine their understanding through guided questioning. Research shows that self-generated explanations stick longer, so debriefs should focus on student discoveries rather than instructor-led summaries.

What to Expect

Successful learning is visible when students can identify biases in new contexts, explain their mechanisms, and justify interventions to mitigate their effects. Look for students connecting simulations to case studies with evidence-based reasoning.

Watch Out for These Misconceptions

Common Misconception

During the Herd Behavior Market Game, watch for students assuming herd behavior always leads to irrational outcomes.

What to Teach Instead

Use the debrief to contrast efficient coordination (e.g., forming a line) with destructive herd behavior (e.g., market bubbles). Ask groups to categorize their simulation rounds and justify each.

Common Misconception

During the Anchoring Estimates experiment, watch for students believing anchors only affect novices.

What to Teach Instead

Have students compare their own estimates with those of peers who received different anchors. Ask them to reflect in journals on how their professional judgments might be swayed by initial data.

Common Misconception

During the Framing Consumer Choices debate, watch for students dismissing framing as mere wordplay with no real impact.

What to Teach Instead

Use the debate’s rebuttal phase to introduce regulatory examples, like mandatory plain packaging for cigarettes, to show framing’s tangible consequences.

Assessment Ideas

Discussion Prompt

After the Anchoring Estimates experiment, pose the following to students: 'Imagine you are advising a client who is hesitant to invest. How might you use or counteract the anchoring bias when presenting investment options? Discuss specific phrases or figures you might use or avoid.'

Quick Check

During the Framing Consumer Choices debate, present students with two scenarios: Scenario A describes a product with a 10% defect rate, and Scenario B describes a product with a 90% success rate. Ask students to write down which product they would prefer and to explain their choice in terms of framing effects.

Exit Ticket

After the Herd Behavior Market Game, ask students to define herd behavior in their own words and provide one example of how it might affect their personal spending habits or investment choices.

Extensions & Scaffolding

• Challenge early finishers to design a new framing for a common product that reverses students' preferences.
• Scaffolding for struggling students: provide sentence stems like, 'The anchoring bias occurs when...' during the Anchoring Estimates debrief.
• Deeper exploration: invite a local entrepreneur or investor to discuss how they account for behavioral biases in their decisions.

Key Vocabulary

Cognitive Bias	A systematic pattern of deviation from norm or rationality in judgment, leading to illogical interpretations or decisions.
Heuristic	A mental shortcut or rule of thumb that allows people to make decisions and solve problems quickly and efficiently.
Anchoring Bias	The tendency to rely too heavily on the first piece of information offered (the 'anchor') when making decisions.
Framing Effect	A cognitive bias where people decide on options based on whether the options are presented with positive or negative connotations; e.g. as a loss or as a gain.
Herd Behavior	The tendency for individuals to mimic the actions (rational or otherwise) of a larger group.