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uncertainty

Intolerance of Uncertainty Scale Test

Take the online Intolerance of Uncertainty Scale Test - AI psychologist FreudlyYou can take Intolerance of Uncertainty Scale Testhere. Online version of a simple and accurate psychological test with interpretation.en
Understand how you handle uncertainty and related worry in about 5 minutes. Useful for therapy progress tracking and support for anxiety, panic, stress, and change at work.
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Questions: 275 minutes
08:30
October 2, 2025
October 2, 2025
Material has been updated
October 2, 2025
Material has been published
26,383 views
1,818 completions
1,355 likes
Verified by Daniel Hall
Psychologist with 25 years of experience
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Scale Explorer

How the Scales are Structured

example score
129/135
Intolerance of Uncertainty Scale (IoUS)
Measures how difficult it is for a person to tolerate uncertainty and cope with situations where outcomes are unknown.
More tolerant
Elevated difficulty
Very high difficulty
27 – 40: More tolerant | 41 – 70: Elevated difficulty | 71 – 135: Very high difficulty
A score of 129 falls in the Very high difficulty range, suggesting uncertainty is likely experienced as highly distressing and may strongly amplify worry in ambiguous situations.
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DATA-BASED USER COHORTS

Who Usually Takes This Test?

Worriers and overthinkers
41%OF USERS
People who feel anxious when plans are unclear and find themselves repeatedly checking, researching, or seeking reassurance before making decisions.
Clients in therapy
34%OF USERS
People working with a therapist for anxiety, panic, or stress who want a quick way to measure how uncertainty affects them and track change over time.
Teams facing change
25%OF USERS
Employees and managers in fast-changing environments who want to understand who struggles without clear instructions and who may need extra support during transitions.
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.
Intolerance of Uncertainty Scale (IoUS)
Intolerance of Uncertainty Scale (IoUS)
Average
61.6
Normal range
45.5 — 77.7
min.
27
max.
135
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.
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SAMPLE QUESTIONS

Example Questions From the Test

You will see statements describing how people may respond to uncertainty. Please use the response scale provided to indicate the extent to which each statement describes you.
    • Not at all like me
    • Somewhat like me
    • Yes, like me
    • Very much like me
    • Exactly like me
    • Not at all characteristic of me
    • A little characteristic of me
    • Somewhat characteristic of me
    • Mostly characteristic of me
    • Very characteristic of me
    • Not at all like me
    • A little like me
    • Somewhat like me
    • Very much like me
    • Exactly like me
These are 3 of the 27 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
Intolerance of Uncertainty Scale Test

Intolerance of Uncertainty Scale Test - Symptoms and Signs

uncertainty
tolerance

This self-report measure assesses an individual’s tendency to respond negatively to uncertain situations. The Intolerance of Uncertainty Scale is commonly used to characterize a cognitive-affective style associated with worry and anxiety.

It consists of 27 items and typically takes about 5 minutes to complete. Items evaluate beliefs and reactions related to ambiguity, unpredictability, and perceived threat in uncertain contexts.

In clinical and applied settings, the Intolerance of Uncertainty Scale may support case formulation, treatment planning, and monitoring of change over time, particularly when uncertainty-related worry is a relevant presenting concern.

Author: Michel Dugas, Robert Ladouceur
Literature: Dugas, M. J., & Robichaud, M. Cognitive-behavioral treatment for generalized anxiety disorder: From science to practice. Routledge. 2007.
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