Psychometric Properties of the Questionnaire Epistemic Trust in People With Mild to Moderate Intellectual Disabilities or Borderline Intellectual Functioning.

The sample was relatively small and consisted mostly of Western-European participants with mild intellectual disabilities, so findings may not apply to those with moderate disabilities or different cultural backgrounds. The assessment was long and often split across multiple sessions, which may have affected participant fatigue and dropout rates. The comparison measures for mentalising and autistic traits had low internal consistency in this population, making it difficult to draw firm conclusions about the QET's validity relative to these constructs. The QET is a self-report measure, which can be prone to overestimation in people with intellectual disabilities.

The authors declare no material reproduced from external sources. The study was reviewed and approved by the Institutional Review Board of the Faculty of Behavioural and Movement Sciences of the Vrije Universiteit Amsterdam.

Do not use the Hypervigilance subscale or the total QET score for clinical decision-making. The Hypervigilance items were unreliable, and the total score is misleading because the questionnaire does not measure a single ability.