The purpose of this study was to describe the decision-making process of 33
9 psychiatric nurses in Finland, Northern Ireland, and the United States an
d to discuss any differences observed among nurses in these countries. The
instrument used in the study was a 56-item, Likert-type questionnaire teste
d in several previous studies that have confirmed its validity and reliabil
ity. Three different models of decision making were identified on the basis
of factor analysis. Overall, it may be concluded that the decision-making
process of psychiatric nurses is broadly based, but it varies between count
ries. Nurses from Northern Ireland used only analytical decision-making mod
els; nurses from Finland made decisions strongly favored analytical decisio
n-making models but also used some intuitive models; and American nurses us
ed intuitive decision-making and analytical-processing models.