Subgroup analysis of sex difference on the Vandenberg-Kuse mental rotation test

A large sex difference has been elicited on the Vandenberg-Kuse mental rotation test. Prior research emphasizes the biological root of this sex difference. In recent experiments we confirmed this viewpoint. A large sample was administered the test, and the distributions of scores for men and women (N = 138; 68 men and 70 women: ages 19 to 23 years). The mean scores were used as cut-off points to group the men and the women in different subgroups (Low/Women, High/Women, Low/Men, High/Men). There were large differences among all subgroups, reinforcing Kimura's testosterone hypothesis for sex differences in spatial ability.     

Physical fitness and self-reported physical exercise among college men and women in 1987 and 1997.

The study examined the relations of self-reported physical activity levels and physical fitness scores for two samples of college students assessed in 1987 (n = 261) and in 1997 (n = 243). Significantly greater exercise was reported by the 1997 women than the 1987 women; amount of exercise reported by men did not differ. For both samples, greater exercise was associated with increased fitness for women and men as assessed by the Hall 1986 Physical Fitness Test Profile, comprised of measures on body fat composition; grip strength; muscle endurance, flexibility, resting heart rate; systolic and diastolic blood pressures; and aerobic power. For the 1987 sample men were more fit than women. For the 1997 sample, women were more fit than men. The 1997 women were more fit than the 1987 women; there was no difference on overall fitness measures of the two samples of men.     

Relationships between recovery-stress state and performance in sprinters and jumpers

This study investigated the possible relationship between recovery-stress state and competition results in sprinters and jumpers. The Recovery-Stress Questionnaire for Athletes of Kellmann and Kallus was used. The subjects were tested one day before the Estonian Indoor Championships (n = 10; 4 men and 6 women) and Outdoor Championships (n= 11; 4 men and 7 women). The competition results were measured as International Amateur Athletic Federation points. Scores for Fatigue (r = -.74) and Emotional Stress (r =-.79) from the subscales were correlated with IAAF points during Indoor Championships. Competition results from the Outdoor Championships were correlated with scores on the Somatic Complaints (r =-.70) and General Well-being (r = .63) subscales. Individual analysis suggests a possible relationship between the recovery-stress state and performance in competition which should be investigated further.     

Examining the potential for gender bias in the prediction of symptom validity test failure by MMPI-2 symptom validity scale scores

Using a sample of individuals undergoing medico-legal evaluations (690 men, 519 women), the present study extended past research on potential gender biases for scores of the Symptom Validity (FBS) scale of the Minnesota Multiphasic Personality Inventory-2 by examining score- and item-level differences between men and women and determining the extent to which FBS scores were able to correctly identify men and women who were divided into credible responders (n = 837) and noncredible responders (n = 372) on the basis of performance on symptom validity tests. Results indicated that women had slightly higher raw FBS scores than men (d = .29), and significant differences between men and women in item endorsement were demonstrated for 14 FBS items. Step-down hierarchical logistic regression procedures indicated predictive bias (χ2Δ = 23.72, p < .001). Follow-up analyses indicated intercept bias (χ2Δ = 23.51, p < .001) but not slope bias (χ2Δ = 0.22, p = .64). However, using the test publisher's recommended FBS cutoff scores (Ben-Porath, Graham, & Tellegen, 2009), classification accuracies were similar for women and men (T > 80, h = -.02; T > 100, h = -.22, respectively). On the basis of these results, we conclude there is no evidence of clinically meaningful bias in predictions of symptom validity test failure made using FBS scores for men and women. (PsycINFO Database Record (c) 2012 APA, all rights reserved).     

Sex of figure drawings and self-esteem.

This study examined the relationship between sex order of human figure drawing and self-esteem. Undergraduates (N = 440) drew a person and completed the Rosenberg Self-esteem Scale. Female subjects (n = 255) drew the opposite sex 39.2% of the time (n = 100), while 185 men drew females first only 6.5% of the time (n = 12). Using median scores derived from the sample, men who drew females first were more likely to have low self-esteem than were the men over-all. Self-esteem judged on the sex of their drawing was not significantly different for women. These findings reinforce the importance of accounting for sex differences in personality assessment and support the hypothesis that drawing of the opposite sex by women may reflect social role rather than psychological conflict.     

Substance use among Iranian psychiatric inpatients.

This study evaluated substance use among a sample of 205 psychiatric inpatients (70 women and 135 men) chosen randomly. The subjects (who had schizophrenia or mood disorders) were evaluated on a confidential questionnaire by interview. Their mean age was 35 yr. (SD= 10.4, range 16 to 69). Of these participants, 76% of the 135 men and 34% of the 70 women admitted use of substances: cigarettes (74% of men, 31.4% of women), opiates (31.9% of men, 4.3% of women), alcohol (23.7% of men, 4.3% of women), hashish (8.9% of men, no women), marijuana (3.7% of men, no women), and cocaine or LSD by none. Only 27% of the women and 63% of the men reported still using substances regularly; some reported using more than one substance. Of the current users, 61.8% of the schizophrenics, 20% of unipolar depressed, and 37.5% of bipolar patients reported current use. The reasons for substance use in order of frequencies of mention were release of tension, seeking pleasure, and need (to avoid withdrawal symptoms) by men and habit, seeking pleasure, and need by women.     

Psychometric properties of a scale measuring negative attitudes toward overweight individuals.

This study examined the psychometric properties of the Anti-fat Attitudes Scale (AFAS), a 5-item instrument developed by the authors to measure negative attitudes toward overweight individuals. A total of 4 studies were conducted among Canadian adolescents (n = 1,452) and university students (n = 424). Results suggested that the AFAS possessed a unidimensional factor structure and satisfactory reliability for both men and women. As predicted, men obtained higher scores than women on the AFAS, and antifat attitudes were positively associated with authoritarianism, homonegativity, and political conservatism. Participants who were overweight had lower scores on the AFAS than participants who were thin or average weight. Responses on the AFAS did not appear to be contaminated by social desirability bias.     

Acculturation scale for Korean-American college students

Two-sample t test on the mean scores of the Suinn-Lew Asian Self-identity Acculturation Scale showed significant differences between 1.5-generation Korean-American college students (n=71, M=2.4, SD=0.4) and second generation Korean-American college students (n=85, M=3.3, SD=0.4). A two-sample t test on the mean scores by men and women was not significant (women: M=3.0, SD=.6; men: M=2.8, SD= 0.6).     

Response confidence and the Ponzo illusion.

The number of longer line judgments and the ratings of confidence in these judgements were significantly higher when the comparison line was located near the apex of the Ponzo wedge but only confidence ratings were affected by the orientation of the wedge (ns = 24 men, 24 women). Differences between the two measures suggest that perceptual and nonperceptual processes may be involved in the illusion.     

Cognitive subprocesses of mental rotation: why is a good rotator better than a poor one?

The Vanderberg-Kuse Mental Rotation Test is a standard test of mental rotation ability. Recent experiments have demonstrated that mental rotation is a complex cognitive process wherein different subprocesses (focused attention, visual scanning, perceptual decision, visual memory) play important roles in performance. We classified the population as good and poor rotators by performance of mental rotation (ns = 47: 22 men and 25 women, respectively; mean age: 20.7 yr.). To examine differences cognitive subprocesses of mental rotation of these two groups were compared. There were significant differences between poor and good rotators in performance on Raven's test and the Pieron Focused Attention test scores. The good rotators scored better because their perceptual decision-analytical intelligence (Raven) and focused attention scores were higher.     

The Sexual Compulsivity Scale: further development and use with HIV-positive persons

We examined the reliability and validity of the Sexual Compulsivity Scale for use in assessing HIV-positive men and women. Measures collected from 287 men and women recruited from the community, the majority of whom were African American and over the age of 30, showed that the Sexual Compulsivity Scale was reliable for men (alpha = .89) and women (alpha = .92). Correlations with measures of sexual behaviors and numbers of sex partners supported the concurrent validity of the Sexual Compulsivity Scale for men and women. Results of discriminant function analyses that included participant age, use of nonalcohol drugs, the Sexual Compulsivity Scale, and scores on measures of trait anxiety, obsessive-compulsiveness, future pessimism, cognitive depression, and borderline personality characteristics showed that sexual compulsivity clearly discriminated between persons with 1 or no sex partners and persons with multiple partners in the past 3 months, for both men and women, suggesting evidence for criterion-related validity. Associations between sexual compulsivity scores and other markers of psychopathology showed different patterns for men and women; sexual compulsivity was associated with indexes of psychopathology in men but not in women. We conclude that the Sexual Compulsivity Scale is reliable and valid in assessing men and women infected with HIV, although sexual compulsivity may present differently between genders in relation to other forms of psychopathology.     

Silencing the self in college settings and adjustment

The correlations among several measures of silencing the self and scores on the College Adjustment Scale were assessed for male and female students at a midwestern university (N = 143). Analysis showed that high scores on Jack's 1991 Silencing the Self Scale and on one of three new measures designed to extend silencing the self to social group settings were associated with scores indicating poorer college adjustment. Also, men scored higher than women on Jack's 1991 measure, and no significant interactions were found for sex and adjustment for any of the silencing the self measures. Thus, silencing the self was generally associated with poorer adjustment scores and similarly for both women and men.     

Self-defeating personality and memories of parents' child-rearing behavior: a replication

A recent study of correlations of self-defeating personality and memories of parents' child-rearing behaviour has been replicated on a larger sample. Non-clinical volunteers (145 women and 114 men) were administered Schill's Self-defeating Personality Scale and a short version of the EMBU-Egna Minnen Betr?ffande Uppfostran (own memories of parental education) scale. Replicating previous findings, memories of rejecting or nonsupportive parents were significantly correlated with scores for the Self-defeating Personality Scale for both women (rejecting mother, r = 24; supportive mother, r = -.29; rejecting father, r = .23; supportive father, r = -.36) and men (rejecting mother, r = 40; rejecting father, r = .41; supportive father, r = -.28). Memories of an overinvolved parent were significantly correlated with self-defeating personality scores only among men (mother: r = .41; father: r = .36) as in the original study.     

Sleep duration and self-reported Type A behavior: a replication.

Scores on the Jenkins Activity Survey (Form T)(Glass, 1977) were compared for 58 and 70 university students who reported, respectively, a regular sleep pattern of less or more than 8 hr per night. Replicating a previous report (Hicks et al., 1979), subjects who slept fewer hours scored higher on Type A behavior questions than those who slept more hours. However, for subjects with a less stable sleeping pattern, Type A scores for the two groups (ns = 72, 23) did not differ.     

The Impact of Parental Status and Gender Role Orientation on Caring and Postconventional Reasoning in Young Marrieds

This study was designed to examine the influence of sex and gender role orientation on adoption of the ethic of care and on postconventional reasoning in married men and women, with and without children. Parental status was unrelated to gender role orientation in men but was associated with masculinity in women, such that women with children had lower masculinity scores. Adoption of an ethic of care in men was a function of gender role orientation, such that only androgynous men did not evidence lower caring scores when they had children. Caring scores in women were a function of both parental status and masculinity, such that women with children who were high in masculinity evidenced lower caring scores. Postconventional reasoning as assessed by P scores on three dilemmas from the Defining Issues Test (DIT) were only influenced by sex and age but not by gender role orientation. Postconventional reasoning as assessed by ratings of all postconventional statements (R scores) was influenced by both sex and gender role orientation; in men, masculinity and femininity interacted such that androgynous and undifferentiated men evidenced higher R scores when they had no children, but only androgynous men with children evidenced high R scores. In women, gender role orientation did not impact R scores and neither did parental status. Multiple regressions indicated that for women, the interaction of masculinity and femininity, and caring scores, accounted for a significant amount of the variance in R scores. In men, none of the variables entered the equation. The implications for both Gilligan’s and Bem’s theories are discussed.     

Sex and age differences on the Raven's matrices

This study examined the effects of sex and age on scores on a matrices test among university and college students aged 17 to 51 yr. Sex differences in mean scores were nonsignificant. The general decline with age was linear and negative, significantly so for women (n = 132), not for men (n = 74). Significant decrements occurred from the age of 26 yr. upwards for women only. The findings suggest that loss of intellectual capacity on the Raven's Matrices can be attributed to age.     

Gender and ethnic differences in the relationship between body esteem and self-esteem.

Gender and ethnic differences in the relationship between body esteem and self-esteem were examined to assess the degree to which these variables change in relation to each other over time. Difference scores (between Time 1 and Time 2, 1 week apart) were obtained using the Self-Esteem Scale (M. Rosenberg, 1979) and the Body Esteem Scale (S. L. Franzoi & S. A. Shields, 1984) for 163 White women, 140 White men, 55 Black women, and 37 Black men. The results indicated that the correlation of the difference scores was stronger for the group of White women than for the other 3 groups, suggesting that changes in self-esteem parallel changes in body esteem more for White women than for White men, Black men, and Black women. The findings are discussed in relation to the prevalence of bulimia nervosa among White women.     

Lack of association of extraversion and neuroticism with sibship size and birth order among Arab college students

In a sample of 450 (220 men, 230 women) Egyptian undergraduates (M age=20.6 yr., SD=1.9), scores on extraversion and neuroticism scales were not associated with sibship size and birth order.     

Gender and Video Game Performance

We investigated potential gender differences in video game (pong) performance in university students. In Experiment 1 men (N = 16) performed significantly better than women (N = 16). Experiment 2 was similar to the first, but used 14 men and 14 women who were matched carefully on previous video game experience. In spite of the matching, results replicated those of the first experiment. In Experiment 3 we evaluated the effect of an audience (male, female, none) on pong performance in 42 men and 42 women. We also assessed trait competition anxiety (Sport Competition Anxiety Test scores), sex role identification (Bem Sex Role Inventory scores), and video game experience. Both genders showed significantly poorer performance when they played pong in the presence of a female audience. Overall, males outperformed females as in the first two experiments. Examination of individuals with low, medium, and high levels of sport competition anxiety and videogame experience reveals persistent gender differences in performance, seemingly independent of levels of anxiety and experience. In all three experiments, both men and women showed significant improvement in performance over trials.     

Awakenings: subjective and objective relationships

Electroencephalographic measures of awakenings and subjective estimates of amount and frequency of awakenings were compared. The subjects were 65 men and 69 women between 50 and 70 yr. of age; their scores showed ranges on these measures. The relationships between the measures were low. Analyses of scores on the perceptual task indicate the reasons for the low relationship. The functional meaning of these findings is discussed.