Practice · case library

One ordinary choice at a time.

Answer in your own words if you want. You can also open a worked example or continue without answering. Neither one grades you or marks the case finished.

Try this today · rotates by UTC date

Choosing today’s case…

Habits · 4 min

The procrastination trade

You say a certification matters for your career, but every evening you choose entertainment over studying.

What does the repeated action reveal?

Lab connection · Choice Machine →
Markets · 5 min

The rent cap

A city caps rents below market rates. More people want apartments at the capped price, while fewer owners want to provide or maintain them.

Which incentive changed?

Lab connection · Market →
Work · 4 min

The free office lunch

A company offers free dinner after 7 p.m. Employees appreciate it, and many stay later.

What behavior is the company buying?

Lab connection · Market →
Money · 5 min

The storm ride

During a storm, ride prices rise. Some riders complain; more drivers also become willing to drive.

What knowledge is the higher price carrying?

Lab connection · Market →
Entrepreneurship · 5 min

The side business split

You split your side-business time across five ideas. None gets enough attention to test demand.

What is scarce?

Lab connection · Discovery →
Personal productivity · 4 min

The cheap tool

You refuse to buy a $30 tool and spend five frustrating hours doing the task manually.

What cost did the actor miss?

Lab connection · Choice Machine →
Health · 4 min

The snack drawer

You say you want to eat clean, but you keep snacks in the drawer and eat them every afternoon.

Which means is shaping the action?

Lab connection · Choice Machine →
Work · 5 min

The raise negotiation

You want a raise, but your manager has budget limits and needs proof that your work changes outcomes.

What means could make agreement easier?

Lab connection · Discovery →
Money · 3 min

The forgotten subscription

A subscription keeps billing because canceling takes ten annoying minutes.

Why does the payment continue?

Lab connection · Choice Machine →
Consumption · 4 min

The status purchase

A person buys an expensive item they barely use because it changes how they feel others perceive them.

What is the real end?

Lab connection · Money & Time →