Intolerance of Uncertainty Scale (IAS) Test
How the Scales are Structured
Who Usually Takes This Test?
See How You Compare
Below is a preview of how scores are typically distributed across each scale.
Once you complete the test, your result will appear on the scale so you can see how you compare.
Once you complete the test, your result will appear on the scale so you can see how you compare.
Example Questions From the Test
- Strongly disagree
- Disagree
- Somewhat disagree
- Not sure
- Somewhat agree
- Agree
- Strongly agree
- Strongly disagree
- Disagree
- Somewhat disagree
- Not sure
- Somewhat agree
- Agree
- Completely agree
- Strongly disagree
- Disagree
- Somewhat disagree
- Unsure
- Somewhat agree
- Agree
- Strongly agree
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Intolerance of Uncertainty Scale (IAS) Test - Symptoms and Signs
This self-report measure assesses individual differences in responses to ambiguous or unpredictable situations. The Intolerance of Uncertainty Scale (IAS) is commonly used to support clinical case formulation and research on worry and anxiety-related processes.
The instrument includes 13 items and typically requires about 3 minutes to complete. Respondents rate statements describing reactions to uncertainty; scores are interpreted as reflecting the degree of difficulty tolerating uncertain outcomes rather than providing a standalone diagnosis.
When clinically indicated, the Intolerance of Uncertainty Scale (IAS) can be used alongside other symptom and functional measures to inform treatment planning and to monitor change over time. The scale is attributed to M. J. Dugas and R. N. Carleton.