Summary
An instrument consisting of 40 semantic differential scales was administered to 125 female student nurses who were instructed to rate the concepts “normal person,” “typical mental case,” and “mad man.” The mean scores on the three ratings were significantly different (p < .001). Coefficient alpha ranged from .90 to .93, and average item-correlation (total minus item) from .41 to .47. These results justify further use of the instrument.