Sex Differences in Attention and Attitude Toward Infant and Sexual Images.

Reproduction in mammals includes two general categories of behaviors: mating and parenting. Historically and cross-culturally, men invest more than women in mating; women invest more than men in parenting. Sex differences in attention and attitude toward mating and parenting stimuli have rarely been assessed together despite theoretical interest. To evaluate these differences simultaneously in a naturalistic setting, 582 study participants (459 women, 123 men) were presented with sexual and infant images, online in the privacy of their home, at three time periods spanning several weeks for a more reliable result. Attention was measured by covertly recording viewing time of images using Qualtrics software, and attitude was measured via self-report after each viewing session. Men reported a more positive attitude than women toward the sexual images; women reported a more positive attitude than men toward the infant images. Women viewed the infant images marginally longer than did men, and the infant-to-sexual viewing ratio was larger for women. The sexual-to-infant viewing ratio was larger for men than for women. Unexpectedly, both genders viewed the sexual images longer than the infant images, with no significant gender difference in the sexual image viewing time. The results suggest that women and men may give equal attention to visual sexual stimuli despite self-reported sex differences in interest. The possibly underestimated valence of visual sexual stimuli for women is discussed.

American and Korean Perceptions of Sex Differences in Deception.

Beliefs about which sex lies more or is better at lying can have subtle but widespread effects on human interactions, yet little is known about such beliefs. In Study 1, an American sample of participants (N = 407, ages 18-64) completed a 12-item survey on perceptions of sex differences in deception. In Study 2, a Korean sample (N = 197, ages 19-58) completed the same survey. Men from both cultures and Korean women perceived no difference regarding which sex tells more white (i.e., relatively harmless or low-stakes) lies. American women perceived that women tell more white lies. Women from both cultures and American men perceived that men tell a greater number of serious (i.e., nonwhite or high-stakes) lies. Korean men perceived no difference regarding which sex tells a greater number of serious lies. Both sexes from both countries reported a perception that (1) men are more likely to lie about height, income, and sexual infidelity, (2) women are more likely to lie about weight and age, and (3) women are better at lying. The findings were mixed regarding perceptions about emotional infidelity. Results are interpreted in light of sex-different challenges to mating and parenting.

Three brief assessments of math achievement.

Because of wide disparities in college students' math knowledge-that is, their math achievement-studies of cognitive processing in math tasks also need to assess their individual level of math achievement. For many research settings, however, using existing math achievement tests is either too costly or too time consuming. To solve this dilemma, we present three brief tests of math achievement here, two drawn from the Wide Range Achievement Test and one composed of noncopyrighted items. All three correlated substantially with the full achievement test and with math anxiety, our original focus, and all show acceptable to excellent reliability. When lengthy testing is not feasible, one of these brief tests can be substituted.