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

Ordered by the crowd’s last few days and what you’ve played in this browser; the ones you haven’t played come first. Volunteer and we’ll also take into account what you enjoy and where you rank. Volunteer 7 experiments

EXP. 004 · Time perception

Feel 10 seconds

How precise is your inner clock? Try to hit 10, 3 and 20 seconds without counting, then keep a one-per-second beat, and see whether your error grows with the duration.

2 min8 responses

Rising this week

EXP. 005 · Sound and shape

Bouba or kiki?

Can a made-up word have a shape, or even a size? Match sounds to shapes over four short rounds; the crowd's answer may be surprising for Turkish.

1 min7 responses

New

EXP. 010 · Visual illusion

Which line is longer?

Matching two lines looks easy, until arrowheads, rails, and surrounding circles get involved. We measure how much your eyes are fooled in four illusions.

2 min5 responses

New

EXP. 003 · Color perception

Mavi or lacivert?

In Turkish, where does 'mavi' (blue) end and 'lacivert' (navy) begin? Find your own boundary with nine shades, and see how the same shade changes against different backgrounds.

2 min5 responses

New

EXP. 023 · Attention

Spot the change

The scene flickers back and forth; the difference is right in front of you, yet seeing it can sometimes take half a minute. Try change blindness for yourself.

2 min1 response

New

EXP. 025 · Number sense

How many dots?

We see three dots at a glance, but we estimate thirty. Measure how many you can count at a glance and how far off your estimates are.

2 min0 responses

New

EXP. 016 · Spatial thinking

Mirror or not?

The more a letter tilts, the more your mind seems to actually turn it. How fast do you rotate letters, shapes, and images under time pressure?

2 min2 responses

New