Figure 4.

Average proportions of correct detections of 9 flavor mixtures (sucrose and vanillin), pc_M, compared with the predictions of 2 models of PS: high threshold (left panel) and signal detection (right panel). The straight lines represent best fits based on the 2 models, each of which requires estimating the proportions of correct detections of the individual flavorants, pc_G (sucrose) and pc_O (vanillin). These estimates differ in the 2 models. In each panel, the measures of pc_M are plotted as a function of the estimated value of pc_G, separately for each estimated value of pc_O. Data are from Marks et al. (2007).