Introductory psychology students read summary ''police reports'' to ju
dge whether an alleged victim consented to sex with a suspect The fact
ors manipulated were the effects of injury and amount of time between
the incident and the filing of a report. A functional measurement anal
ysis was used to determine the cognitive algebra underlying the judgme
nts. An additive model was supported by the data. Subjects were more l
ikely to consider the sex consensual if the victim was uninjured and w
aited three days to report the incident to police. Male subjects assig
ned higher consent ratings than females for all stimulus combinations.