Multiple Stimulus Types Ambiguity Tolerance Scale-I (MSTAT-I) Test
In 5 minutes, see whether you stay calm with uncertainty or need firm structure and clear control. Get fast, actionable insight for work, school, and relationships as change hits.
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08:30
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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
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.
Below is a preview of how scores are typically distributed across each scale.
Attitude Towards Ambiguous Situations (ATAS)
Average
27.6
Normal range
17.9 — 37.3
min.
9
max.
63
Majority
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.
Once you complete the test, your result will appear on the scale so you can see how you compare.
Attitude Towards Challenging Tasks (ATCT)
Average
21.5
Normal range
15.9 — 27.1
min.
7
max.
49
Majority
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.
Once you complete the test, your result will appear on the scale so you can see how you compare.
Attitude Towards Novelty (ATN)
Average
9.3
Normal range
6.8 — 11.9
min.
3
max.
21
Majority
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.
Once you complete the test, your result will appear on the scale so you can see how you compare.
Acceptance/Avoidance of Uncertainty (AoU)
Average
44.8
Normal range
35.6 — 53.9
min.
11
max.
77
Majority
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.
Once you complete the test, your result will appear on the scale so you can see how you compare.
Preference for Uncertainty (PfU)
Average
57.5
Normal range
45 — 69.9
min.
11
max.
77
Majority
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.
Once you complete the test, your result will appear on the scale so you can see how you compare.
Tolerance for Uncertainty (TfU)
Average
76
Normal range
58.8 — 93.1
min.
22
max.
154
Majority
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.
Once you complete the test, your result will appear on the scale so you can see how you compare.
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CLEAR ANSWERS TO COMMON QUESTIONS
Frequently Asked Questions
What does this questionnaire measure?
It measures comfort with unclear, complex, or unpredictable situations. It reflects preference for strict structure versus openness to multiple possible outcomes.
How is the questionnaire completed?
Read each statement and select the response that best matches typical attitudes and reactions. Answer all items and avoid spending too long on any single statement.
How long does it take and how many items are included?
Completion time is usually about 5 minutes. The questionnaire contains 22 items.
How should scores be interpreted?
Higher scores indicate greater tolerance for ambiguity and flexibility in uncertain conditions. Lower scores indicate a stronger need for clarity, predictability, and stable rules.
What are common uses of the results?
Results are used to describe how uncertainty may affect decision-making, learning, work behavior, and interpersonal functioning. They may inform counseling, training, or research when understanding responses to change is required.
WHAT THE TEST MEASURES
About This Assessment
Multiple Stimulus Types Ambiguity Tolerance Scale-I (MSTAT-I) Test - Symptoms and Signs
This measure evaluates individual differences in responses to ambiguous or uncertain situations. The Multiple Stimulus Types Ambiguity Tolerance Scale-I (MSTAT-I) is a brief self-report instrument intended to assess comfort with, or avoidance of, ambiguity in everyday contexts.
The instrument consists of 22 items and typically requires about 5 minutes to complete. It is commonly used in research and applied assessment settings to characterize ambiguity tolerance as a dispositional variable that may be relevant to decision-making, flexibility in changing circumstances, and preference for structure; it is not a diagnostic test. The Multiple Stimulus Types Ambiguity Tolerance Scale-I (MSTAT-I) was developed by Stanley Budner and David J. McLain.
Author: David J. McLain, Stanley Budner
Literature: Budner, S. Intolerance of ambiguity as a personality variable. Journal of Personality. 1962.; McLain, D. L. Evidence of the properties of an ambiguity tolerance measure: The Multiple Stimulus Types Ambiguity Tolerance Scale-II (MSTAT-II). Psychological Reports. 2009.; Furnham, A., & Marks, J. Tolerance of ambiguity: A review of the recent literature. Psychology. 2013.; McLain, D. L. The MSTAT-I: A new measure of an individual's tolerance for ambiguity. Educational and Psychological Measurement. 1993.
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