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Acute Mental Fatigue Assessment Questionnaire Test

Take the online Acute Mental Fatigue Assessment Questionnaire Test - AI psychologist FreudlyYou can take Acute Mental Fatigue Assessment Questionnaire Testhere. Online version of a simple and accurate psychological test with interpretation.en
Understand your mental fatigue and focus during the day in about 4 minutes. 18 quick items support safer decisions, fewer errors, and sustained performance in high-demand work.
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Questions: 184 minutes
08:30
October 2, 2025
October 2, 2025
Material has been updated
October 2, 2025
Material has been published
18,392 views
1,715 completions
1,452 likes
Verified by Daniel Hall
Psychologist with 25 years of experience
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Scale Explorer

How the Scales are Structured

example score
10/16
Scale 2 (S2)
Assesses disruptions in self-regulatory processes that support sustained activity and can be associated with mental fatigue.
Low disruption
Moderate disruption
High disruption
0 – 5: Low disruption | 6 – 11: Moderate disruption | 12 – 16: High disruption
A score of 10 falls in the Moderate disruption range, suggesting noticeable strain in regulatory processes that may reduce efficiency during sustained mental work.
example score
9/20
Scale 1 (S1)
Measures decreased performance and cognitive discomfort associated with acute mental fatigue.
Low
Moderate
High
0 – 6: Low | 7 – 13: Moderate | 14 – 20: High
A score of 9 falls in the Moderate range, suggesting noticeable mental fatigue with some reduction in concentration and efficiency.
example score
20/36
Mental Fatigue Index (MFI)
Measures the severity of acute mental fatigue affecting concentration and cognitive efficiency during information-intensive activity.
None–Mild
Moderate
Severe
0 – 16: None–Mild | 17 – 28: Moderate | 29 – 36: Severe
A score of 20 falls in the Moderate range, indicating a noticeable level of mental fatigue that may reduce sustained attention and mental efficiency.
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just completed the test
DATA-BASED USER COHORTS

Who Usually Takes This Test?

Office and knowledge workers
41%OF USERS
People who spend hours on emails, documents, and meetings use it to check whether mental strain is reducing focus and productivity during the day.
Operators and dispatch staff
34%OF USERS
Roles that require sustained attention and rapid decisions take it to spot fatigue that could increase errors or slow reaction time.
Students and exam takers
25%OF USERS
Learners use it to see how studying and information overload are affecting concentration and recovery after intense mental effort.
BASED ON AGGREGATED, ANONYMIZED DATA FROM TENS OF THOUSANDS OF FREUDLY USERS.
Benchmarking

See How You Compare

Once you complete the test, your results are compared with real-world data from people in your country.
Below is a preview of how scores are typically distributed across each scale.
Scale 2 (S2)
Scale 2 (S2)
Average
7.8
Normal range
5.6 — 9.9
min.
0
max.
16
This curve shows how scores are typically distributed.
Once you complete the test, your result will appear on the scale so you can see how you compare.
Scale 1 (S1)
Scale 1 (S1)
Average
6.8
Normal range
3.4 — 10.1
min.
0
max.
20
This curve shows how scores are typically distributed.
Once you complete the test, your result will appear on the scale so you can see how you compare.
Mental Fatigue Index (MFI)
Mental Fatigue Index (MFI)
Average
14.4
Normal range
9 — 19.9
min.
0
max.
36
This curve shows how scores are typically distributed.
Once you complete the test, your result will appear on the scale so you can see how you compare.
Start Online Test
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SAMPLE QUESTIONS

Example Questions From the Test

Please read each of the statements below carefully and consider how you feel at the present moment. Mark “Yes” if the statement reflects your current feelings, or “No” if it does not apply. If you have difficulty choosing an answer, select the intermediate response. Do not spend too much time deciding; the first impression is usually the most accurate.
    • Yes
    • Not sure
    • No
    • Yes
    • Not sure
    • No
    • Yes
    • Not sure
    • No
These are 3 of the 18 real questions — the rest appear in the test. No sign-up needed to start.
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WHAT THE TEST MEASURES
About This Assessment
Questionnaire for Assessing Acute Mental Fatigue Test

Acute Mental Fatigue Assessment Questionnaire Test - Symptoms and Signs

fatigue

During sustained cognitive demands, individuals may experience transient reductions in attention, efficiency, and mental stamina. The Acute Mental Fatigue Assessment Questionnaire is a brief self-report measure designed to capture perceived acute mental fatigue in contexts that require sustained information processing and rapid responding.

The instrument includes 18 items and typically requires about 4 minutes to complete. It is intended to provide a structured snapshot of current subjective mental fatigue and related functional impact (e.g., concentration strain and perceived decrease in effectiveness) and may be used in occupational, academic, or other high-demand settings. The Acute Mental Fatigue Assessment Questionnaire was developed by David M. Dinges and can be considered alongside other clinical or performance-related indicators when evaluating fatigue-related risk or monitoring change over time.

Author: David M. Dinges
Literature: Hockey, G. R. J. Cognitive-energetical control mechanisms in the management of work demands and psychological health. In A. D. Baddeley & L. Weiskrantz (Eds.), Attention: Selection, awareness, and control. Oxford University Press. 1993.
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