Abstract
In this study, the authors investigate the effects of efficacy and cooperativeness on willingness to adopt an innovation at the individual and nursing-unit levels. The results of a field report showed that efficacy was significantly associated with willingness to adopt an innovation at both the individual and nursing-unit levels, whereas cooperativeness was significant only at the individual level. These results suggest that examining innovation adoption at multiple levels provides more valid information than does examining it at a single level.