This paper reports on a survey of mental health clinician views of including people with psychosis and negative symptoms in outcome research. A questionnaire was forwarded to clinicians (the majority of whom were mental health nurses) completing post-registration undergraduate and postgraduate degree courses in psychosocial interventions for psychosis. Fifty questionnaires were returned (a response rate of 84.7%). A total of 47% of respondents indicated that they might refrain from offering this group as potential participants to clinical trials. Thematic analysis suggests views that negative symptoms are not amenable to treatment inform such decisions. The results highlight the potential difficulties faced by researchers investigating new treatments for people with negative symptoms, and suggest further exploration of clinician views of referring this group to research and psychosocial treatments is warranted.