ABSTRACT
This study examined the impact of teaching Bayesian reasoning by instructing people how to construct frequency representations. For this purpose two frequency representations were designed. In the frequency grid version, participants learned how to construct frequency representations by means of grids, and in the frequency tree version they learned to construct frequency representations by means of trees. A rule-training tutorial was designed as a control, in which participants were taught how to insert probabilities into Bayes’ formula. As was the case with the preceding training programs, these three tutorials also were programmed in Macintosh Common Lisp (Apple Computer, Inc., 1992) and were implemented on Macintosh computers.
