What's Your IQ

Fast and right is the goal

Each bar is one answer from your last round — taller means slower. Slips cluster where you rush.

Correct per minute

Your headline score

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Average answer

On correct trials

Slips

Wrong answers

–

Accuracy

Aim for 95%+

Play a round to see your answers here.

WHY IT MATTERS

Speed buys you room to think

Information in working memory fades within seconds. The faster you process each step, the more steps you finish before the first one slips away. Drag the slider to see it.

Time per step700 ms

At 700 ms a step, you finish 4 steps before the first one fades.

Illustration assuming a 3-second hold in working memory.

Search smarter, not just faster

Burn the targets in

Glance at the two targets first and name them in your head: "cup, diamond".

Avoid:reading the row before you know what you want.

Sweep once, left to right

One steady pass is faster than jumping around.

Avoid:rechecking symbols you have already passed.

Trust the "no"

If nothing jumped out in one sweep, answer no and move on.

Avoid:a second sweep on every no — it doubles your time.

Watch the twins

Some symbols are mirror images (⊂ ⊃, ◐ ◑). Slow down only for those.

Avoid:slowing down on every symbol.

INSIDE YOUR BRAIN

Look, compare, decide

Every answer is a quick relay between three regions. Pick one to see its part.

Based on Gray's Anatomy, fig. 728 (public domain)

~19years old

Roughly when processing speed peaks, in a large online study. Other abilities, like vocabulary, keep rising for decades.

Hartshorne & Germine, 2015

WAISsubtest

Symbol Search is one of the two core tasks behind the Processing Speed Index on Wechsler intelligence tests.

Wechsler, 2008

SourcesSalthouse (1996), Psychological ReviewHartshorne & Germine (2015), Psychological ScienceWechsler (2008), WAIS-IV

WHAT THIS GAME TRAINS

Scanning for a match

Is either target symbol in the search group? Answer as many as you can. A Wechsler processing-speed subtest that combines quick looking with quick deciding.

corestrongsomelight

coreProcessing speedWorking through items quickly.

coreVisual scanningChecking each symbol in the group.

strongVisual discriminationTelling near-identical symbols apart.

someDecision speedCommitting to yes or no fast.

OUTSIDE THE GAME