Trial investigating the effects of a brief online uncertainty tolerance training for young people

A randomised controlled trial investigating whether the single session online Uncertainty-Mindset Training improves tolerance of uncertainty and anxiety symptoms greater than a control training in 18- to 24-year-olds

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN17157557

Enrollment

388

Registered

2026-06-02

Start date

2026-06-08

Completion date

Unknown

Last updated

2026-06-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Reduction of intolerance of uncertainty and anxiety symptoms in an unselected population (i.e., with or without a psychiatric condition). Mental and Behavioural Disorders

Interventions

Participants will be randomised in a 1:1 allocation to receive either the Uncertainty-Mindset Training or the control Mind and Brain Training. This will be done using the Qualtrics randomizer element

Eligibility

Sex/Gender

All

Age

18 Years to 24 Years

Inclusion criteria

Inclusion criteria: 1. Aged 18-24 years 2. Native English fluency 3. No history of traumatic brain injury 4. No history of epilepsy/seizures 5. No learning difficulties 6. Live in one of the following countries: UK, US, Australia, New Zealand, Canada, Ireland, South Africa 7. 95-100% approval rate on Prolific 8. Minimum of 20 prior studies completed on Prolific 9. Not previously recruited for the related studies run by research team

Exclusion criteria

Exclusion criteria: 1. Fail 2 or more attention checks at any assessment 2. Submit an exceptionally fast study response (3 SD or below the mean response time of the sample)

Countries

Australia, Canada, England, Ireland, New Zealand, South Africa, United Kingdom, United States of America

Contacts

Public ContactSarah Daniels

Sarah.Daniels@mrc-cbu.cam.ac.uk+44 01223 767529

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Jun 21, 2026