Micro

Elasticity of Water

The Kahoot provides an interesting example of the price elasticity of demand for water. Students are given enough information to calculate the price elasticity using the midpoint method.  Since the coefficient is negative and between 0 and -1, the price elasticity of demand in inelastic – that is the correct answer. However, many students object, stating that they would never pay $5 for bottled water (their demand in elastic), to which you should respond, “It’s the Hilton, as long as bottled water drinkers value the convenience more that then extra price they pay, their demand is inelastic. Don’t confuse what you would do with what others decide to do.”

Course Used: Principles of Micro
Quiz Nature: Discussion starter
Question Length: 1
Estimated Time to Play: 3-5 minutes with explanation.

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Behavioral

Dominant Strategies

The Kahoot provides a 2 x 2 payoff matrix so that students can identify the dominant strategy. Students who are careless or simply don’t understand what “marginal” means will typically identify the point where total product begins to fall but marginal product begins falling much sooner.

Course Used: Principles of Micro
Quiz Nature: Concept Review
Question Length: 1
Estimated Time to Play: 2-3 minutes with explanation.

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Behavioral

Allais Paradox

The Kahoot replicates the Allais Paradox. Maurice Allais received the Nobel Prize in Economics for demonstrating that income was a key determinant of risk preference. Before Allais economists assumed that people were either risk averse, risk neutral of risk takers and that their preferences did not change. It is our experience that 20-30 percent of your students will choose gambles 1 and B (just like Allais’ subject did over 30 years ago).

Course Used: Principles of Micro
Quiz Nature: Discussion Starter
Question Length: 1
Estimated Time to Play: 5 minutes.

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Behavioral

Monty Hall Problem

Misperceptions of probabilities is one the human limitations that behavioral economists examine. One of the most famous examples is the Monty Hall problem, named after Monty Hall the original host of Let’s Make a Deal.  On the show Monty Hall would show the final contestant three doors and ask them to choose one. Then he would reveal a “goat” behind one of the doors the contestant did not choose. At that point, he’d then ask the contestant if they would like to switch doors. The contestant should since this gives them a 2/3rd chance of winning the grand prize but most don’t switch because they don’t want to regret the switch if it turns out that their first choice of doors is the winner. Regret is an important behavioral concept that causes people to make choices that fail to maximize the expected value of probability distributions. There is also a wonderful scene in 21 that explains the problem superbly:

Course Used: Principles of Micro
Quiz Nature: Discussion Starter
Question Length: 2
Estimated Time to Play: 5-8 with explanation of the mathematics.

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Macro, Micro

Shifts vs Movement of Demand

Understanding the difference between a change in demand and a change in the quantity demanded is crucial to success in any principles course. This question will stump many of your students but not all. Pro tip: once the correct answer is revealed, ask one of your students to explain the answer!

Course Used: Principles of Micro
Quiz Nature: Discussion Starter
Question Length: 1
Estimated Time to Play: 15-20 minutes.

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Macro, Micro

Exam 1 Review — Introductory Material

This review from the University of San Diego covers foundations, comparative advantage, the PPF, and supply and demand.

Course Used: Principles of Micro
Quiz Nature: Exam Review
Question Length: 8
Estimated Time to Play: 12-15 minutes.

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