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Children Facing the Unknown: An Italian Study Using the Intolerance of Uncertainty Scale- Parent (IUS-P).
Sara Iannattone1, Lisa Toffoli2, Alessandra Farina2
1Department of General Psychology, University of Padova, via Venezia 8, Padova, 35131, Italy. sara.iannattone@unipd.it.
Research on Child and Adolescent Psychopathology
|August 5, 2025
Summary
The Intolerance of Uncertainty Scale-Parent (IUS-P) is a reliable tool for assessing childhood intolerance of uncertainty (IU). This validated scale aids in understanding early psychopathology and executive functioning in children.
Area of Science:
- Child Psychology
- Clinical Psychology
- Psychometrics
Background:
- Intolerance of Uncertainty (IU) research primarily focuses on adults, neglecting childhood.
- Understanding childhood IU is crucial for identifying early signs of psychopathology.
- Validated assessment tools for childhood IU are needed.
Purpose of the Study:
- To examine the factor structure and psychometric properties of the Intolerance of Uncertainty Scale-Parent (IUS-P).
- To assess the reliability and validity of the IUS-P for evaluating IU in children aged 4-10 years.
Main Methods:
- A bifactor model was used to analyze the IUS-P factor structure in 796 Italian parents.
- Measurement invariance across sex and age groups was tested.
- Reliability (test-retest) and construct validity (associations with psychopathology and executive functioning) were evaluated.
Main Results:
- The bifactor model demonstrated superior fit, supporting a total score for the IUS-P.
- The IUS-P showed full measurement invariance across sex and age groups.
- Excellent one-month test-retest reliability and significant positive associations with psychopathological features and executive functioning impairments were found.
Conclusions:
- The IUS-P is a reliable and valid instrument for assessing IU in Italian children.
- IU's association with psychopathology and executive dysfunction highlights its transdiagnostic nature in childhood.
- Findings support the IUS-P's utility in clinical and research settings for childhood IU assessment.
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