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Intolerance of uncertainty — IUS-12

Explore how uncertainty affects your expectations and ability to act with the 12-item IUS-12.

Method and research sources

What this questionnaire explores

Explore how uncertainty affects your expectations and ability to act with the 12-item IUS-12.

How scoring works

Add all 12 answers scored 1–5 for a total of 12–60. Seven items form prospective anxiety (7–35); five form inhibitory anxiety (5–25). No items are reversed.

Method and sources

The original publication and supporting material document the questionnaire and its scoring.

  1. Original publication
    Fearing the unknown: A short version of the Intolerance of Uncertainty Scale

    R. Nicholas Carleton, M. A. Peter J. Norton, Gordon J. G. Asmundson

    2007
  2. Validation study2023

Explore related experiences, practical guidance and support.

Questions about this test

Does a high score mean I have an anxiety disorder?

No. It describes your response to uncertainty. Diagnosis requires a broader assessment of symptoms, circumstances and their effect on daily life.