Decision making is an important daily nursing activity. Given contradi
ctory part findings concerning the ease of use of cognitive schema for
reaching decisions among experts and novices, we chose to examine con
sistency of information as a parameter that may clarify the process of
decision making. Ninety-two experienced nurses and 65 nursing student
s rated their decisional difficulty and levels of certainty in reachin
g a diagnosis for two scenarios: one including consistent information
and one providing information that was partly inconsistent with the gi
ven diagnosis. For the consistent information, students showed more di
fficulty and less certainty in the given diagnosis than the experience
d nurses. The inconsistent scenario war perceived as more difficult by
nurses in comparison to students. The cognitive processes responsible
for these results are discussed.