The expected consequences of a score on an ability test can constrain
individual performance. The authors predict that status processes, inc
luding status differences and the differences in rewards and costs tha
t result, will produce differences in ability test scores between high
-status and low-status individuals. In three controlled experiments, p
articipants randomly assigned low status scored lower on a standard te
st of mental ability (the Raven Progressive Matrices) than did partici
pants assigned high status. For both men and women, the difference in
ability test score between low-status and high-status participants was
about half a standard deviation. The results suggest the need to acco
unt for status differences in any attempt to measure mental ability ac
curately.