Two experiments investigated gender differences in recognition memory for faces and cars. Stimuli were line drawings of cars and of adult men and women (Experiment 1) and photographs of real cars and of real boys and girls (Experiment 2). In both experiments, performance was better on faces than on cars. Regarding recognition memory for men's faces, in Experiment 1, men's scores were higher than women's scores. However, in Experiment 2, men recognized more cars than did women, and women recognized more children than did men. Results are generally consistent with the hypothesis that memory reflects male and female interest in, and/or differential familiarity for, different kinds of material.Peer effects have been found in recognition memory for faces. Research shows that people are generally more accurate on own-race and gender faces than on other-race and gender faces (Bothwell, Brigham, & Malpass, 1989; McKelvie, 1981;Shapiro & Penrod, 1986). However, the gender effect is more reliable for women than for men, and women perform better than men on faces of children, leading McKelvie (1981) to propose that gender differences may be mediated by differential interest. To test this hypothesis, he suggested that researchers might investigate memory for material expected to be of particular interest to men and to women.Recently, in a developmental study of children and adults, Davies and Robertson (1993) invoked the interest hypothesis to account for their findings that males clearly recognized more photographs of automobiles than did females, whereas females tended to recognize more female faces than did males. Experiment 1 of the present study was also designed to compare memory for faces and cars with memory for adult men and women. However, male faces were included and pictures were shown in the form of line drawings to test the generality of the automobile superiority effect for males. cated at random to the presentation set, and all stimuli constituted the test set. For this purpose, they were paired randomly, with the restriction that each stimulus appear beside another from the same class.Procedure. The subjects were tested in a laboratory in small groups. During Session I, they were shown each of the 40 faces or cars for 5 sec and instructed to memorize the material for a test 48 h later. During this test, the 80 pairs were shown for 10 sec, during which the subjects recorded whether the original picture was on the left or the right.