Fifteen participants were trained on a within-subjects basis with two discrimination training conditions and one simple generalization training (control) condition to determine whether gradient shifts can be obtained within a stimulus dimension consisting of women's waist-to-hip ratios (WHRs). In one discrimination condition, the S- consisted of the "optimal" WHR; in the other, the S- consisted of the approximate mean WHR for adult women. For all three conditions, the S+ was an intermediate value. Under both discrimination training conditions, the generalization gradient was observed to shift away from the S- and toward extreme values on the opposite end of the dimension; under the ...