As a risk factor of hallucination proneness, the level of mindfulness has not yet been investigated in non-clinical participants. Other potential mediators, such as mental distress (depression, anxiety, and stress) which contribute to hallucination proneness also need to be assessed. This study investigated the mediating efect of mental distress in predicting hallucination proneness based on mindfulness. A number of 168 Iranian university students completed three questionnaires: (1) the fve-facet mindfulness questionnaire, (2) the depression, anxiety and stress scale; and (3) the revised hallucination scale. The results showed that there was a signifcant association between levels of mindfulness and hallucination proneness. Mental distress has a signifcant efect on four facets of mindfulness questionnaire and an insignifcant efect on one facet (awareness) in predicting hallucination. These efects were both direct and indirect. The indirect efect was developed by the mediating role of mental distress.

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