Weatherly, Nurnberger, and Hanson (2005) investigated negative anticipatory contrast, which involves the decrease in consumption of a low-valued substance in the presence of a high-valued substance in Sprague-Dawley rats. Additionally, positive induction was also investigated, which involves the potential increase of low-value reinforcer responses if responding to a high-value reinforcer is possible. The factors that contributed to these behaviors were investigated, including auditory cues, temporal delays, location of substance delivery, and food reward. A couple of lickometers were placed in the subject’s home cage, which were used to deliver the sucrose reward of various concentrations. The lickometers could measure 10 licks. Three colored stimulus lights, of 0.6 cm in diameter each, were placed five centimeters above each lickometer. Yellow light was placed in the center, and red and green lights were placed on the left and right sides. The lights were used to indicate the presence of the sucrose reward. Temporal and auditory cues were manipulated by delaying the reward and sounding a tone during the presentation of the reward. Furthermore, trials involving separate locations to deliver the rewards were conducted by employing two separate spouts for reward delivery. The results indicated that temporal delays and auditory cues had no significant effect on whether the subjects’ consumption of 1% sucrose either increased or decreased when the consumption of 32% sucrose was near. Deprivation of sucrose promoted induction. Whether contrast or induction occurred also depended on whether consumption occurred from one spout in one location (induction) or two different spouts in two different locations (contrast).