A questionnaire study which aims to test a new questionnaire measuring self-dehumanisation in psychosis. We are testing to see if the self-dehumanisation questionnaire is both reliable and valid. We hope that this might help us develop better treatments for people in the future.

Participants are asked to complete a questionnaire, at Day 1 and then 3 days later.

To take part you must meet the following criteria:

- People with a diagnosis of schizophrenia spectrum disorder, F20 – F29 in the ICD.

- People eligibility for early intervention in psychosis services