ConductCognition

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    Latest post10 November 2026What you can do in ConductCognition todayA short tour of ConductCognition as it stands on 10 November. After this, we'll post when something changes how you run a study.Read the post
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  3. /Sleep and Fatigue Battery

Test battery

Sleep and Fatigue Battery

Four tests of alertness for sleep and fatigue research: vigilance lapses, reaction speed, sustained attention and visual search.

Start a study with this batteryRead the guideCompare with other batteries
Tests
4, in a fixed order
Evidence
BGrade B
Time
About 23 minutes
Device
Timed tests: participants need a desktop or laptop with a mouse or trackpad.
Languages
Runs in all eight participant languages.
Price
$0.99 academic or $2.49 commercial, per participant
Version
1.0.0

Research use only

Tests in order

Participants take the tests in this order, each with its standard settings. Changing, reordering or adjusting a test makes the study a custom study.
  1. 1
    Psychomotor Vigilance Task

    AEvidenceMain score: Mean Reaction Time

    4-6 min
  2. 2
    Simple Reaction Time

    AEvidenceMain score: Mean Reaction Time

    2-3 min
  3. 3
    Sustained Attention to Response

    BEvidenceMain score: Commission Errors

    5-7 min
  4. 4
    Visual Search Test

    BEvidenceMain score: Conjunction Search Slope

    5-7 min

Timed tests: participants need a desktop or laptop with a mouse or trackpad. The app checks each participant's device before the first test.

Other orders

Possible orders
24
In a balanced Latin square
4
The 4 orders of a balanced Latin square, each test as its number in the list above
Order1st2nd3rd4th
11 Psychomotor Vigilance Task2 Simple Reaction Time4 Visual Search Test3 Sustained Attention to Response
22 Simple Reaction Time3 Sustained Attention to Response1 Psychomotor Vigilance Task4 Visual Search Test
33 Sustained Attention to Response4 Visual Search Test2 Simple Reaction Time1 Psychomotor Vigilance Task
44 Visual Search Test1 Psychomotor Vigilance Task3 Sustained Attention to Response2 Simple Reaction Time

A study run in this square can measure each test's position effect and the carryover each test leaves on the next.

Numbers are places in the list above. A study started from this battery gives everyone that order, or rotates it and stays this battery.

Try other orders in the order lab

Published evidence

A battery takes the grade most of its tests reach. A minus means some tests have a lower grade, and a battery is never more than one letter above its weakest test. The study builder grades every study the same way.
B

Grade B: every graded test has at least grade B published evidence. 2 tests have grade A evidence and 2 have grade B.

Grade A needs at least 25 test-retest papers and 25 registered clinical studies for each test. Sustained Attention to Response has 11 test-retest papers; Visual Search Test has 15 test-retest papers.

Grade B means at least 8 test-retest papers, and either 5 registered clinical studies or 150 reliability or validity papers.

Grades describe the published research on each task, not this battery or ConductCognition's version of it. Source: ConductCognition test census 0.39.0, counted 31 October 2026 from OpenAlex and ClinicalTrials.gov. See every test's counts or every battery's grade

What it measures

  • Vigilance and lapses of attention
  • Psychomotor speed
  • Sustained attention and response control
  • Visual search efficiency

Suited to: Sleep and fatigue research

Research areas: Sleep and fatigue, aging and dementia, medication and drug trials

Example report

Participant report

Example data
TestMain scoreResultSession quality
Psychomotor Vigilance TaskMean Reaction Time294.4 msValid
Simple Reaction TimeMean Reaction Time317.1 msValid
Sustained Attention to ResponseCommission Errors9Valid
Visual Search TestConjunction Search Slope25.4 ms per itemValid

No test in this battery has a reference group yet, so the report shows raw scores.

In a study, the report lists every score of each test, a percentile where a published norm covers the test and the participant's age, and each session's quality.

Price

Each participant uses one credit, however many tests: $0.99 for academic research or $2.49 for commercial research. Every account starts with 10 free participants, and yearly plans include participants each year. Compare plans

Start a study with this battery

Preview the tests yourself before you invite anyone. Research use only.

Start a studyRead the guide
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