Attention
Reaction time
Press the moment the signal appears. Nothing to work out, just speed.
6–13 trials · Compared by input
Try a practice
Attention
Stroop test
Choose the ink color while ignoring the color word.
14–28 words · Timed · 8 levels
Attention
Symbol coding practice
Use a changing key to match each symbol with the correct digit.
18–32 matches · Timed · 8 levels
Attention
Visual search
One shape is named. Find it. Sometimes it jumps out, sometimes it hides.
8–36 shapes · Timed · Pop-out and hidden
Attention
Trail making
Join the numbers in order, then alternate numbers and letters against the clock.
Part A and part B · 10 to 25 circles · Timed
Attention
Continuous addition
Add each pair of digits along a long row, one timed row after another.
3 to 15 rows · 30 to 60 seconds each · Results by row
Attention
Perceptual speed practice
Answer same or different against a key, or count one symbol in a line.
2 modes · 90 seconds or 12 lines · 3 levels
Attention
Task switching
A banner names the rule. Sort the card by it. The rule changes without warning.
40 cards · Two blocks · Switch cost in ms
Attention
Go/no-go test
Press for the green lamp with a dot. Do nothing for the orange lamp with a bar.
80–100 Go/no-go signals · 192 stop-signal arrows · Three levels
Attention
Grid arithmetic
Read one instruction, find the numbers it names in a grid, then work out the answer.
8 questions · 6 levels · Untimed or a 3-minute round
Attention
••
Multiple-object tracking
Follow the marked balls as they move, then find them among the others.
5 trials · 3 levels
Attention
Find 1 · unscored
Schulte table
Find the numbers in order in a shuffled grid. Keep a steady, accurate pace.
3 grids · 3 sizes
Attention
Quick dot count
See a small group of dots briefly, then say how many you saw.
12 trials · 1–4 dots
Attention
Spot the change
Study a group of figures, then find the one that changed after a short blank.
6 trials · 4–8 figures
Attention
Flanker
Read the center arrow while its neighbors point with it or against it.
24 trials · 3 levels
Attention
Simon task
Choose Left or Right by the shape, ignoring which side it appears on.
24 trials · 3 levels
Attention
Sustained attention
Watch a two-minute stream and respond to occasional targets. Review misses and false alarms separately.
2 minutes · 4 rules · 2 paces
Attention
Numbers around the center
Identify a briefly shown number while looking toward a central marker.
2 min
Attention
Quick look
Take in more at a glance: a shape in the middle and a star around it.
24 looks · 5 levels · Answers untimed
Attention
Spot the differences
Two versions of one picture of everyday things, side by side. Tap each place where they differ.
3 pictures · 4 levels · No time limit
Attention
Two-hand tracing
Trace two shapes at once with a finger of each hand, or one at a time with a mouse.
4 pairs · 3 levels · No time limit
Attention
Find it in the painting
Look at one large painting from The Met and find the details on a list, such as a dog, a red jug or a boat.
5–8 details · 12 paintings · Hints · Magnifier · Print
Attention
Notice around you
Pause to notice a few ordinary details in your surroundings.
At your pace · No score
Learn a method
Browse lessonsKeep a steady pace
Add digits that sit next to each other, keep only the last digit, and hold one pace across the row.
Goes with Continuous addition
See the difference
Compare in pairs from the left, and stop at the first one that does not match.
Goes with Perceptual speed practice
Hold the rule
Say the rule before the card, and say the new one again the moment the banner changes.
Goes with Task switching
Wait for the signal
Respond to the visible signal, not to a guess about when it should appear.
Goes with Reaction time
Name the ink
Choose the color of the letters, even when the word names another color.
Goes with Stroop test
Read the symbol key
Match the current symbol to this round’s key and enter its paired digit.
Goes with Symbol coding practice
Check both features
Find the named shape by checking its color and outline together.
Goes with Visual search
Follow the moving group
Keep track of the original balls as they move, rather than remembering their starting places.
Goes with Multiple-object tracking
Scan a number grid
Find numbers in ascending order while keeping your place in an unchanged grid.
Goes with Schulte table
See a small group
Recognize a few dots as a group, then choose their number after they disappear.
Goes with Quick dot count
Notice what changed
Remember each figure and its direction, then find the one change in the same positions.
Goes with Spot the change
Focus on the middle
Find the center arrow and answer its direction, even when the surrounding arrows disagree.
Goes with Flanker
Follow the shape, not the side
Follow the shape’s response, even on the opposite side.
Goes with Simon task
Watch for the target
Check each item against a visible rule and respond only when it matches.
Goes with Sustained attention
Scan, then compute
Read the instruction twice, mark the numbers it names, then work it out.
Goes with Grid arithmetic
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