42 open experiments

Experiments.

Each one is based on published research and takes a few rounds; most last two or three minutes. At the end you compare your answer with the crowd and read the science behind the finding. Play again as often as you like.

All Arcade Group Perception Memory and attention Decisions and logic Games Numbers and chance Race mode Not played yet

Biggest gains this week over last week first. Jumps from small numbers are smoothed out. 4 experiments

EXP. 011 · Probability

The Linda problem

Linda, Bill, and a health survey: across four short scenarios, will your intuition win, or the simplest rule of probability?

2 min7 responses

Plays this week: 6

EXP. 013 · Thinking

The bat and the ball

Seven questions that look easy. The real trap is that they look easy.

3 min3 responses

Plays this week: 1

EXP. 026 · Confidence

How sure are you?

Ten questions, and for each one a lower and upper bound you are 90 percent sure about. We measure not what you know, but how well you know what you don't know.

4 min1 response

Plays this week: 1

EXP. 027 · Logic

Four cards

Four cards, one rule. In psychology's most famous logic puzzle, most people turn over the wrong cards; but move the same logic into a bar scene and things change.

3 min0 responses

Plays this week: 0