Development of the Nurse Attitude Scale short form: factor analysis in a large sample of Japanese psychiatric clinical staff.

The Nurse Attitude Scale (NAS) measures nurses' Expressed Emotion. A short form of the NAS was developed and its reliability and validity examined. After performing factor analysis using 1252 samples, three factors were extracted. Cronbach's alpha for individual subscales was 0.852 for Hostility, 0.846 for Criticism and 0.645 for Positive Remarks. There was a significant correlation between individual subscales in the NAS short form and corresponding subscale in the Maslach Burnout Inventory (P < 0.001). The NAS short form seems to have acceptable reliability and validity.