FIGURE 12-26 Studying Sexual Motivation and Mating In this experiment, a male rat must press the bar 10 times to gain access to a receptive female who drops in through a trapdoor. The copulatory behavior of the male rat illustrates mating behavior, whereas the bar pressing for access to a female rat illustrates sexual motivation.
Barry J. Everitt, Department of Experimental Psychology and the MRC-Wellcome Behavioural and Clinical Neuroscience Institute, University of Cambridge.