Objectives: The aim of this paper was to test the measurement properties of self-report (SR) and significant other (SO) versions of the Health of the Nation Outcome Scales (HoNOS).
Method: SR and SO HoNOSs, with content closely paralleling the clinician HoNOS but with item 8 expanded into scales rating each difficulty separately, were developed and trialed with Early Intervention for Psychosis service users and their significant others.
Results: Satisfactory agreement was found between SR, SO and clinician HoNOSs, and between the SR and SO on most additional items.
Conclusions: Results suggest adequate validity of the measures. The additional items proved useful for identifying comorbidities that may have been under-recognized. Results suggest that SR and SO versions of the HoNOS can be valid and valuable for triangulating and recording the perspectives of different stakeholders in promoting recovery.