Intolerance of Uncertainty Scale (IAS) Test
Learn how you handle uncertainty and ambiguity in just 3 minutes. This 16 item check offers fast insight for coaching, therapy, and teams working under change and risk.
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08:30
Scale Explorer
How the Scales are Structured
DATA-BASED USER COHORTS
Who Usually Takes This Test?
BASED ON AGGREGATED, ANONYMIZED DATA FROM TENS OF THOUSANDS OF FREUDLY USERS.
RESULTS YOU CAN ACTUALLY USE
What You’ll See After You Finish the Test
Benchmarking
See How You Compare
Once you finish the test, your results will be compared with real-world data from people in your country.
Below is a preview of the benchmarks we use to place your score in context.
Below is a preview of the benchmarks we use to place your score in context.
Intractability (I)
Average
15.3
Normal range
12 — 18.6
min.
3
max.
21
majority
This curve shows how scores are typically distributed.
Once you complete the test, your result will appear here so you can see where you land.
Once you complete the test, your result will appear here so you can see where you land.
Difficulty (D)
Average
47.4
Normal range
40.3 — 54.4
min.
9
max.
63
majority
This curve shows how scores are typically distributed.
Once you complete the test, your result will appear here so you can see where you land.
Once you complete the test, your result will appear here so you can see where you land.
Novelty (N)
Average
17.4
Normal range
13.1 — 21.6
min.
4
max.
28
majority
This curve shows how scores are typically distributed.
Once you complete the test, your result will appear here so you can see where you land.
Once you complete the test, your result will appear here so you can see where you land.
Intolerance of Uncertainty (IoU)
Average
63.1
Normal range
51.2 — 75
min.
16
max.
112
majority
This curve shows how scores are typically distributed.
Once you complete the test, your result will appear here so you can see where you land.
Once you complete the test, your result will appear here so you can see where you land.
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CLEAR ANSWERS TO COMMON QUESTIONS
Frequently Asked Questions
What does this questionnaire measure?
It measures reactions to uncertainty and unclear situations. Scores reflect the degree of discomfort, avoidance, or acceptance of ambiguity.
How long does it take and how many items are included?
Completion typically takes about 3 minutes. It includes 16 statements.
How should the items be answered?
Select the response that best matches typical thoughts or behavior, not a single unusual event. Answer all items without spending long on any one statement.
How are results interpreted across versions?
One version reports a single continuum from tolerance to intolerance. Another version reports two separate scores that describe intolerance and tolerance as independent traits.
In what settings are results commonly used?
Results can support psychological assessment, counseling, and coaching when response to uncertainty is clinically or practically relevant. They may also inform team or role decisions in contexts that involve unstable or high-risk conditions.
WHAT THE TEST MEASURES
About This Assessment
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Intolerance of Uncertainty Scale (IAS) Test - Symptoms and Signs
This self-report measure assesses individual differences in responses to ambiguity and uncertain situations. The Intolerance of Uncertainty Scale (IAS) is commonly used to characterize discomfort with uncertainty and related cognitive-emotional reactions in clinical and research settings.
It consists of 16 items and typically requires about 3 minutes to complete. Developed by R. N. Carleton, the Intolerance of Uncertainty Scale (IAS) can support case conceptualization and outcome monitoring when intolerance of uncertainty is relevant to presenting concerns, with interpretation guided by the scoring procedures for the version in use.
Author: R. N. Carleton
Literature: Carleton, R. N. The intolerance of uncertainty construct in the context of anxiety disorders: Theoretical and practical perspectives. Expert Review of Neurotherapeutics. 2012.; Dugas, M. J., & Robichaud, M. Cognitive-behavioral treatment for generalized anxiety disorder: From science to practice. Routledge. 2007.; Budner, S. Intolerance of ambiguity as a personality variable. Journal of Personality. 1962.
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