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Voice Impact Scale (VIS)


This study aims to develop a questionnaire that can be used to measure the impact of voices on the person hearing them.

What is involved?

Participants will be asked to complete 4 questionnaires which will take 30 minutes.


To take part in this study you must meet the following criteria:

  • Age over 18 years old
  • Have been hearing voices for at least a year    
  • Meet diagnostic criteria (DSM 5) for a psychosis spectrum condition (schizophrenia,schizoaffective disorder, delusional disorder or psychosis not otherwise specified) as verified by a mental health practitioner

Unfortunately, you cannot take part if:

  • You have a cognitive impairment that prevents giving informed consent 


If you would like to take part or get more information on this study please contact the study lead:

Study Contact: Carolyn Asher


Tel: 02382310787