Purpose: Non-numerate decision makers need to know probabilities defining their decisions under uncertainty. As a substitute for numeric, verbal and graphic probability representations which are more effective for the numerate than the non-numerate, probability is directly experienced and unconsciously constructed through a stream of user-controlled, visually mediated, binomial trials. Secondarily, the purpose is to investigate the differences in properties of experiential probability communication between the numerate and non-numerate components of the general patient population.
Result: Subjects (N = 14) have performed 32 trials. Correlation between input probability to communicate, and probability reported by subject is 0.92, an encouraging value. No users reported counting numbers of success and failures of trials.
Conclusion: Further work needed to determine differences between numerate and non-numerate performance. Trials are needed to determine if subjects over or underreport low and high probabilities. It is not known if experiential probability communication yields consistent results for pairs of experienced complementary values.