Irrational Impulse Teacher Guide Irrational Impulse
Behavioral Economics & Choice Architecture
Teacher Guide
12th Grade Economics / Psychology
Learning Objectives
Identify common cognitive biases (anchoring, loss aversion, framing).
Contrast traditional "Homo Economicus" with real-world human behavior.
Analyze how "Nudge Theory" shapes consumer environments.
Evaluate the ethical implications of choice architecture.
Pacing (90 Minutes)
10m: The "Decoy" Hook (Experimental Game)
20m: Brain Glitch Direct Instruction (Slides)
30m: The Choice Architect Lab (Game/Activity)
20m: Nudge Case Study Analysis (Worksheet)
10m: Impulse Check (Exit Ticket)
Materials Needed
Irrational Impulse Slide Deck
Choice Architect Scenario Cards
Brain Glitch Analysis Sheets
Nudge Check Exit Tickets
Instructional Flow
1
The Hook: The Popcorn Dilemma
Present students with two options: Small popcorn ($3) and Large popcorn ($7). Ask for a show of hands for each. Then introduce a "Decoy": Small ($3), Medium ($6.50), and Large ($7). Observe the shift toward the Large. Use this to introduce the Decoy Effect.
2
Direct Instruction: Humans vs. Econs
Use the Slide Deck to contrast "Econs" (perfectly rational actors) with "Humans" (predictably irrational). Define Heuristics as mental shortcuts. Focus on:
Anchoring: Relying on the first piece of info offered.
Loss Aversion: Feeling the pain of loss twice as much as gain.
Framing: Reacting differently depending on how info is presented.
Status Quo Bias: The tendency to do nothing/stick with defaults.
3
Activity: Choice Architect Lab
Divide students into "Design Teams." Give each team a "Social Good" problem (e.g., increasing organ donor registration, reducing cafeteria food waste, increasing savings). Their task is to design a "Nudge" using choice architecture principles (defaults, visibility, framing) without removing options or changing prices significantly.
4
Debrief: The Ethics of the Nudge
Lead a discussion on Libertarian Paternalism. Is it ethical for a government to "nudge" its citizens toward healthy behaviors? Where is the line between help and manipulation?
Essential Questions
"If humans are predictably irrational, should the free market be left completely unregulated?"
"How does social media use 'infinite scroll' as a nudge to keep you engaged?"
"Is it possible to ever be a truly 'rational' consumer?"
"Who should decide what a 'good' choice is for another person?"
Irrational Impulse Slides Irrational
Impulse
The Psychology of Choice in Economics
12th Grade Behavioral Economics
The Myth of "Econs"
Homo Economicus
A hypothetical person who makes perfectly rational decisions to maximize their own utility.
Infinite calculating power
Unbiased by emotions
Perfect self-control
Reality Check:
"Humans are not Econs. We are more like Homer Simpson."
— Richard Thaler
The Brain Glitch
Heuristics
Mental shortcuts our brains use to make fast decisions in a complex world.
Cognitive Biases
Systematic patterns of deviation from norm or rationality in judgment.
Predictable
Because these glitches are hard-wired, our "irrationality" is predictable.
"Our mistakes are not random; they are systematic."
Bias #1
Anchoring
The tendency to rely too heavily on the first piece of information offered (the "anchor") when making decisions.
Real World Example:
"Was $999. Now only $299!"
The $999 is the anchor. It makes $299 feel like a steal, regardless of the item's actual value.
Original Price
$1,200
Member Price
$399
Bias #2
Loss Aversion
The pain of losing is twice as powerful as the joy of gaining.
+$100
Small Joy
-$100
Huge Pain
"We take bigger risks to avoid loss than we do to achieve gain."
Nudge Theory
Definition:
Changing the Choice Architecture to influence behavior without forbidding any options or significantly changing their economic incentives.
Golden Rule:
"Make the right choice the easy choice."
Example: Cafeteria
Placing fruit at eye level while making chips harder to reach.
Example: Defaults
Automatically enrolling employees in retirement savings (Opt-out vs. Opt-in).
The Ethical Tightrope
Libertarian Paternalism
The idea that it's possible and legitimate for private and public institutions to affect behavior while also respecting freedom of choice.
"Helping people help themselves."
Manipulation?
Who decides what a "good" choice is? Is choice architecture just a fancy name for invisible control?
Choice Architect Game Cards Choice Architect Lab
Design the Nudge. Solve the Problem.
Mission Briefing
Your team of Choice Architects has been hired to solve the following social and economic problems. For each scenario, you must design a Nudge that influences behavior without removing choices or changing prices significantly.
Defaults
Framing
Incentives
1
The Apple Waste
Problem
Students in the cafeteria are taking whole apples but throwing 70% of them away untouched.
Goal
Increase the actual consumption of fruit.
Architect's Note:
Think about "Choice Effort." Is it easier to eat a whole apple or a sliced one?
2
Saving for Later
Problem
Only 20% of new employees are signing up for the company retirement savings plan.
Goal
Increase enrollment to 80%+.
Architect's Note:
Think about "Defaults." What happens if the paperwork asks you to "Opt-out" instead of "Opt-in"?
3
The Organ Donor
Problem
The state has a shortage of organ donors, even though 90% of citizens say they support it.
Goal
Increase registrations at the DMV.
Architect's Note:
Think about "Social Proof." What if the form showed how many other neighbors are donors?
4
Energy Vampires
Problem
Homeowners are using 20% more electricity than needed because they keep the AC too low.
Goal
Reduce household energy consumption.
Architect's Note:
Think about "Salience." What if the bill compared their usage to the 'Most Efficient' neighbor?
Team Verdict
Present your best nudge to the class.
Design Team Name:
Brain Glitch Worksheet Brain Glitch Analysis
Mapping Irrationality in the Market
Student:
Date:
1
Heuristic Hunter
Identify which cognitive bias (Anchoring, Loss Aversion, or Framing) is being used in each scenario below. Briefly explain WHY.
A subscription service offers:Basic: $10/moPremium: $25/moUltra: $30/mo
Bias:
Explanation:
A beef package is labeled as"90% Lean" "10% Fat."
An app tells you:"Complete your profile now or you'll lose your 50% discount streak!"
2
The Architect's Analysis
Case Study: Organ Donation
In Germany (Opt-in), only 12% of the population are organ donors. In Austria (Opt-out), 99.98% are organ donors. Both countries have similar cultures and social attitudes toward donation.
How does "Status Quo Bias" explain the massive difference in these two percentages?
Is it ethical to use a "default" nudge for a decision as personal as organ donation? Why or why not?
3
Personal Glitch
Think of a time you bought something you didn't really need or spent more than you planned. Looking back, which "brain glitch" (heuristic) might have influenced you?
Nudge Check Exit Ticket Nudge Check
Exit Ticket
Irrational Impulse
Name:
1. Define "Nudge" in your own words:
2. One thing that "nudged" you today (an ad, a layout, a default):
3. Rate the ethics of "Nudging" citizens:
MANIPULATION
HELPFUL
Nudge Check
Exit Ticket
Irrational Impulse
Name:
1. Define "Nudge" in your own words:
2. One thing that "nudged" you today (an ad, a layout, a default):
3. Rate the ethics of "Nudging" citizens:
MANIPULATION
HELPFUL
Nudge Check
Exit Ticket
Irrational Impulse
Name:
1. Define "Nudge" in your own words:
2. One thing that "nudged" you today (an ad, a layout, a default):
3. Rate the ethics of "Nudging" citizens:
MANIPULATION
HELPFUL
Nudge Check
Exit Ticket
Irrational Impulse
Name:
1. Define "Nudge" in your own words:
2. One thing that "nudged" you today (an ad, a layout, a default):
3. Rate the ethics of "Nudging" citizens:
MANIPULATION
HELPFUL
