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Updated: Jan 8, 2026

A Modified Trier Social Stress Test for Vulnerable Mexican American Adolescents
Published on: July 10, 2017
A single session online training reduces intolerance of uncertainty and improves mental health in emerging adults
Sarah Daniels1, Yasmin Hasan1, Susanne Schweizer1
1School of Psychology, University of New South Wales, Sydney, Australia.
Background:
High uncertainty in recent global health, geopolitical, and climate crises has been proposed as one important driver of the rise in youth mental health problems. This makes intolerance of uncertainty - a transdiagnostic risk factor for mental health problems - a promising target for intervention.
Methods:
This study presents a novel single-session online training that took a synergistic mindset approach to promote uncertainty-as-adaptive and growth mindsets. The novel Uncertainty-Mindset Training was compared with Psychoeducation and No-Training control groups in 259 older adolescents/emerging adults (18-to-24-year-olds).
Results:
The Uncertainty-Mindset Training reduced intolerance of uncertainty, anxiety symptoms, and depression symptoms 1 month later. Importantly, the clinical gains were mediated by reductions in intolerance of uncertainty.
Conclusions:
Given that this ultra-brief training can be delivered at scale globally and at no cost to the users, it shows promise for significant public health impacts.
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