Money
Paying over $17 per gym visit when a pass charged $10
Records from 7,752 members of three U.S. health clubs: those on flat monthly fees paid more per visit than a pass. A per-use check, and its limits.
Confidence
Wealth
66,465 households: the busiest traders earned 11.4%, the market 17.9%
In 66,465 U.S. brokerage households, 1991–96, the busiest traders earned 11.4% a year as the market made 17.9%. What the study says trading cost them.
Mindset
Can You Draw a Bicycle? A Test for What You Only Think You Know
Zippers, toilets and bicycles feel understood until you have to explain them. What the studies found, where the effect stops, and a quick self-check.
Motivation
The Hot Hand Was Called a Myth for Decades. Then the Math Flipped
A 1985 study called basketball's hot hand an illusion. A 2018 math fix found a modest one in the same data. How to use a streak without overbetting it.
Mindset
Fewer People Noticed Than You Think: The Spotlight Effect, Measured
In a classic study, people in an embarrassing T-shirt guessed about 46% of the room noticed. About 23% did. Here's how to use that gap.