Mice were tested for saccharin and quinine consumption. One tube always contained water and the other contained the tastant solution. Mice were serially offered saccharin (0.033% and 0.066%) or quinine hemisulfate (0.03 mM and 0.06 mM) and intake was calculated. Each concentration was offered for 4 days, with bottle position changed every day. For each tastant, the low concentration was always presented first, followed by the higher concentration.
