Processing speed tests measure how quickly people take in information, respond and move.
22 tests
Measures processing speed and visual scanning by asking participants to connect numbered circles in ascending order as quickly as possible.
2 to 3 minutes · Desktop or laptop
Counted with Trail Making Test B
Measures processing speed and visual-motor mapping by requiring rapid symbol-to-key matching under time pressure.
4 to 5 minutes · Desktop or laptop
Measures how quickly and accurately people solve simple arithmetic. Single-digit addition, subtraction and multiplication problems appear one at a time in three timed blocks, one per operation, and participants type each answer.
4 to 5 minutes · Desktop or laptop
Measures motor speed. Participants tap one key as fast as they can with one index finger for 10 seconds at a time, the F key with the left hand and the J key with the right. The main score is the mean number of taps per trial with the hand they write with.
4 to 6 minutes · Desktop or laptop
Measures implicit sequence learning. One of four boxes lights up and participants press its key. A repeating 10-step sequence is replaced by a random block near the end, and the slowdown in that block shows how much of the sequence was learned.
3 to 4 minutes · Desktop or laptop
Measures basic processing speed by asking participants to respond as quickly as possible when a stimulus appears on screen.
2 to 3 minutes · Desktop or laptop
Measures motor adaptation. Participants move a cursor from a center circle through targets with a mouse or trackpad while the cursor is turned by a fixed angle, then reach without seeing it. The main score is adaptation: how far the hand turns to make up for the rotation.
8 to 10 minutes · Desktop or laptop
Measures information processing speed and working memory. Digits appear one at a time at a fixed pace, and participants type the sum of each digit and the one before it before the next digit appears. This is the visual version: digits are shown and sums are typed.
5 to 7 minutes · Desktop or laptop
Measures motor skill learning. Participants type the sequence 4 1 3 2 4 on the number keys with the left hand, as quickly and accurately as they can, in 12 trials of 30 seconds with 30 seconds of rest between them. The main score is the number of correct sequences per trial over the last three trials.
13 to 14 minutes · Desktop or laptop
A research measure of drawing accuracy and steadiness. Participants trace a five-loop spiral from the center outward, first with the hand they write with and then with the other hand. Every pointer sample is recorded with its time, and the main score is how far the writing hand's line strays from the spiral.
3 to 5 minutes · Desktop, laptop or tablet
Measures the sense of time over 1 to 8 seconds. Participants copy how long a circle stayed on the screen and hold a key for a named number of seconds. The main score is the mean error as a percent of the interval.
6 to 8 minutes · Desktop or laptop
Measures aimed movement. Participants click circles around a ring, at three sizes and three distances, with a mouse or trackpad. The main score is throughput in bits per second, which combines speed and accuracy.
4 to 6 minutes · Desktop or laptop
Measures how people judge short durations. Participants learn a short and a long time for which a disk stays on screen, then say whether each new time was closer to the short or the long one. The main score is the bisection point, the time judged long half the time.
5 to 8 minutes · Desktop or laptop
Measures eye-hand tracking. Participants keep a dot on a target that moves around a circle at three speeds, using a mouse or trackpad. The main score is the percent of time on target.
5 to 7 minutes · Desktop or laptop
A timed measure of perceptual speed. Two line patterns or two strings of consonants appear side by side, and the person answers same or different as fast as they can without many errors. Timed blocks of patterns and letters take turns. The score is right answers minus wrong answers.
4 to 5 minutes · Desktop or laptop
Measures visuomotor skill under a mirror reversal. Participants trace a star drawn as a band with a dot whose movement is reversed, up and down as standard, as in a mirror. The main score is the number of times the dot leaves the band per trace, with the time each trace takes.
6 to 10 minutes · Desktop or laptop
A measure of subitizing: taking in a few items at a glance. One to nine dots flash for 200 ms, and participants press the number key for how many there were. Answer times rise slowly up to about four dots and steeply after. The score is the subitizing span, the number of dots at which that rise turns, fitted to each person's answer times.
5 to 6 minutes · Desktop or laptop
A measure of the approximate number system: how precisely people judge which of two groups of dots has more, without counting. Two clouds of 6 to 24 dots flash side by side for 750 ms, and participants press the key for the side that had more. The main score is the Weber fraction fitted to the answers at four fixed ratios; lower means finer judgments of number.
5 to 7 minutes · Desktop or laptop
Measures how people place numbers in space. A number appears above a line that runs from 0 to 100 or from 0 to 1000, and the participant marks where the number belongs. The main score is the percent absolute error: how far the marks fall from the true places, as a share of the line.
4 to 6 minutes · Desktop, laptop or tablet
A measure of how number size links to left and right. Digits from 1 to 9 appear one at a time, and participants press F or J to say whether each is odd or even, with the keys swapped between blocks. The main score is the SNARC slope: how much faster the right hand becomes, against the left, as the digits get larger.
9 to 11 minutes · Desktop or laptop
A measure of how quickly people judge the size of numbers. Two digits from 1 to 9 appear side by side, and participants press the key on the side of the larger one. The main score is the numerical distance effect: how much slower answers are when the two digits are close (1 or 2 apart) than when they are far apart (5 to 8).
5 to 6 minutes · Desktop or laptop
Measures implicit statistical learning. One of four circles fills in and participants press its key. Every other circle follows a hidden repeating pattern and the rest are random, so some runs of three come up more often than others; faster responses to the frequent runs show learning.
9 to 12 minutes · Desktop or laptop
Papers that name each test, counted for our test census. Tests counted together share a bar. Counts and grades describe the published research on each task, not ConductCognition's version of it.
Source: ConductCognition test census 0.14.0, counted 31 October 2026 from OpenAlex and ClinicalTrials.gov.
| Test | Papers, 2021 to 2025 | Compared with 2016 to 2020 | Use grade | Evidence grade |
|---|---|---|---|---|
| Trail Making Test A and Trail Making Test B | 3,944 | Up 22% | A | A |
| Symbol Coding | 2,557 | Up 48% | A | A |
| Arithmetic Fluency Task | 485 | Up 12% | B | B |
| Finger Tapping Task | 447 | Up 11% | B | A |
| Serial Reaction Time | 418 | Down 10% | B | B |
| Simple Reaction Time | 417 | Down 21% | B | A |
| Visuomotor Adaptation Task | 405 | Up 10% | B | C |
| Paced Visual Serial Addition Test | 397 | Down 20% | B | A |
| Motor Sequence Task | 380 | Up 21% | B | B |
| Spiral Drawing Test | 170 | Up 158% | C | B |
| Time Estimation Task | 152 | Up 6% | C | C |
| Fitts Pointing Task | 138 | Down 33% | C | C |
| Temporal Bisection Task | 125 | Up 7% | C | C |
| Pursuit Tracking Test | 78 | Down 5% | D | B |
| Pattern and Letter Comparison | 70 | Up 119% | D | C |
| Mirror Tracing Task | 49 | Down 17% | D | C |
| Enumeration Task | 46 | Down 21% | D | D |
| Dot Comparison Task | 34 | Up 55% | D | D |
| Number Line Estimation | 31 | Up 29% | D | C |
| SNARC Parity Task | 26 | Down 4% | E | D |
| Digit Comparison Task | 24 | Up 60% | E | D |
| Alternating Serial Reaction Time | 23 | Down 21% | E | C |
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