Results indicated that the "helped child" appeal was most effective in eliciting interest from potential donors; the "needy chld" appeal proved least effective. (Author)

A procedure for predicting categorical outcomes using categorical predictor variables was described by Moonan. This paper describes a related technique which uses prior probabilities, updated by joint likelihoods, as classification criteria. The procedure differs from Moonan's in that the outcome having the greatest posterior probability is…