A meta-analytic review of gender differences in perceptions of sexual harassment

Research on gender differences in perceptions of sexual harassment informs an ongoing legal debate regarding the use of a reasonable person standard instead of a reasonable woman standard to evaluate sexual harassment claims. The authors report a meta-analysis of 62 studies of gender differences in harassment perceptions. An earlier quantitative review combined all types of social-sexual behaviors for a single meta-analysis; the purpose of this study was to investigate whether the magnitude of the female-male difference varies by type of behavior. An overall standardized mean difference of 0.30 was found, suggesting that women perceive a broader range of social-sexual behaviors as harassing. However, the meta-analysis also found that the female-male difference was larger for behaviors that involve hostile work environment harassment, derogatory attitudes toward women, dating pressure, or physical sexual contact than sexual propositions or sexual coercion.     

Sex differences in duration judgments: A meta-analytic review

We quantitatively reviewed human sex differences in the magnitude and variability of duration judgments. Data from 4,794 females and 4,688 males yielded 87 effect size estimates of magnitude and 28 of variability. The overall sex difference in duration judgment magnitude was small but statistically significant. It was moderated by whether study participants knew in advance (prospective paradigm) or only later (retrospective paradigm) that they would be required to judge duration. Although prospective judgments showed no overall sex effect, some levels of moderator variables showed a small but statistically significant effect. Retrospective judgments showed a larger subjective-to-objective duration ratio for females than for males, and several variables moderated this effect. Females' judgments also showed more intersubject variability than did males' judgments. Relative to males, females sustain attention to time more in the prospective paradigm and have better episodic memory in the retrospective paradigm.     

Sex differences and the own-gender bias in face recognition: A meta-analytic review

We review the literature on sex differences and the own-gender bias in face recognition. By means of a meta-analysis, we found that girls and women remember more faces than boys and men do (g=0.36), and more female faces (g=0.55), but not more male faces (g=0.08); however, when only male faces are presented, girls and women outperform boys and men (g=0.22). In addition, there is female own-gender bias (g=0.57), but not a male own-gender bias (g= ? 0.03), showing that girls and women remember more female than male faces. It is argued that girls and women have an advantage in face processing and episodic memory, resulting in sex differences for faces, and that the female own-gender bias may stem from an early perceptual expertise for female faces, which may be strengthened by reciprocal interactions and psychological processes directing girls' and women's interest to other females.     

Sex differences in physically aggressive acts between heterosexual partners: A meta-analytic review

Meta-analyses are reported of sex differences in acts of physical aggression to heterosexual partners, derived from the Conflict Tactics Scale (CTS) [J Marriage Fam 8 (1979) 75], using methods based on standardized mean differences, and on odds ratios. Women were more likely than men to throw something at the other, slap, kick, bite, or punch, and hit with an object. Men were more likely than women to beat up, and to choke or strangle. Differences ranged from very small to medium. Samples selected for marital problems showed large effects in the male direction, and student samples showed effects more in the female direction than community samples. Effect sizes derived from partners' reports were more in the male direction than those derived from self-reports, but the overall pattern of results was similar. A similar pattern of findings resulted from the use of odds ratios to derive effect sizes, although the magnitude of effects was greater. Limitations of the current CTS measures and the database are discussed.     

Sex differences in cooperation: a meta-analytic review of social dilemmas

Although it is commonly believed that women are kinder and more cooperative than men, there is conflicting evidence for this assertion. Current theories of sex differences in social behavior suggest that it may be useful to examine in what situations men and women are likely to differ in cooperation. Here, we derive predictions from both sociocultural and evolutionary perspectives on context-specific sex differences in cooperation, and we conduct a unique meta-analytic study of 272 effect sizes-sampled across 50 years of research-on social dilemmas to examine several potential moderators. The overall average effect size is not statistically different from zero (d = -0.05), suggesting that men and women do not differ in their overall amounts of cooperation. However, the association between sex and cooperation is moderated by several key features of the social context: Male-male interactions are more cooperative than female-female interactions (d = 0.16), yet women cooperate more than men in mixed-sex interactions (d = -0.22). In repeated interactions, men are more cooperative than women. Women were more cooperative than men in larger groups and in more recent studies, but these differences disappeared after statistically controlling for several study characteristics. We discuss these results in the context of both sociocultural and evolutionary theories of sex differences, stress the need for an integrated biosocial approach, and outline directions for future research.     

Intellectual functioning in adults with ADHD: a meta-analytic examination of full scale IQ differences between adults with and without ADHD

Although attention has been given to the intellectual functioning of children with attention-deficit/hyperactivity disorder (ADHD) relative to their non-ADHD peers, few studies have examined intellectual functioning in adults with ADHD. The purpose of the current investigation was to examine differences in intellectual ability between adults with and without ADHD via a meta-analytic review. Of the 33 studies meeting inclusion criteria, primary analyses focused on 18 studies representing 1,031 adults with ADHD and 928 non-ADHD, nonclinical comparison adults and containing Wechsler Adult Intelligence Scale (WAIS; D. Wechsler, 1955, 1981, 1994) Full Scale IQ scores or estimates. A significant effect was found such that adults with ADHD scored lower than non-ADHD adults on WAIS intelligence tests. However, this difference was small and not clinically meaningful. The presence of several moderators reflecting characteristics of the ADHD samples and study methodology suggested that only a subset of adults with ADHD (e.g., those with comorbid disorders) may experience lower general intellectual ability relative to non-ADHD comparison adults. Implications of the findings for clinical and research settings are presented as well as suggestions for improving methodology and reporting in future research.     

Sex differences in aggression between heterosexual partners: a meta-analytic review

Meta-analyses of sex differences in physical aggression to heterosexual partners and in its physical consequences are reported. Women were slightly more likely (d = -.05) than men to use one or more act of physical aggression and to use such acts more frequently. Men were more likely (d = .15) to inflict an injury, and overall, 62% of those injured by a partner were women. The findings partially support previous claims that different methods of measurement produce conflicting results, but there was also evidence that the sample was an important moderator of effect size. Continuous models showed that younger aged dating samples and a lower proportion of physically aggressive males predicted effect sizes in the female direction. Analyses were limited by the available database, which is biased toward young dating samples in the United States. Wider variations are discussed in terms of two conflicting norms about physical aggression to partners that operate to different degrees in different cultures.     

Age differences in everyday problem-solving and decision-making effectiveness: a meta-analytic review

The authors report a meta-analysis of age differences in everyday problem-solving/decision-making effectiveness (EPSE). Effect sizes were calculated to reflect 3 age group comparisons: old versus young, young versus middle-aged, and middle-aged versus old. Findings from the meta-analysis of 28 separate studies with an aggregate of 4,482 participants do not support theories of preserved EPSE in late adulthood. Although significant age differences of moderate magnitude persisted across methodological and theoretical domains, rating criteria (experimenter vs. participant) emerged as a significant moderator of the effect magnitude and direction. In addition, EPSE in older adults was bolstered when problem content was interpersonal and when samples were highly educated. Finally, the current results support the conceptual integration of findings from the everyday problem-solving and everyday decision-making literatures.     

Risk propensity differences between entrepreneurs and managers: a meta-analytic review

Research examining the relative risk-taking propensities of entrepreneurs and managers has produced conflicting findings and no consensus, posing an impediment to theory development. To overcome the limitations of narrative reviews, the authors used psychometric meta-analysis to mathematically cumulate the literature concerning risk propensity differences between entrepreneurs and managers. Results indicate that the risk propensity of entrepreneurs is greater than that of managers. Moreover, there are larger differences between entrepreneurs whose primary goal is venture growth versus those whose focus is on producing family income. Results also underscore the importance of precise construct definitions and rigorous measurement.     

A meta-analytic review of behavior modeling training

A meta-analysis of 117 studies evaluated the effects of behavior modeling training (BMT) on 6 training outcomes, across characteristics of training design. BMT effects were largest for learning outcomes, smaller for job behavior, and smaller still for results outcomes. Although BMT effects on declarative knowledge decayed over time, training effects on skills and job behavior remained stable or even increased. Skill development was greatest when learning points were used and presented as rule codes and when training time was longest. Transfer was greatest when mixed (negative and positive) models were presented, when practice included trainee-generated scenarios, when trainees were instructed to set goals, when trainees' superiors were also trained, and when rewards and sanctions were instituted in trainees' work environments.     

A meta-analytic review of gender variations in children's language use: talkativeness, affiliative speech, and assertive speech

Three sets of meta-analyses examined gender effects on children's language use. Each set of analyses considered an aspect of speech that is considered to be gender typed: talkativeness, affiliative speech, and assertive speech. Statistically significant average effect sizes were obtained with all three language constructs. On average, girls were slightly more talkative and used more affiliative speech than did boys, whereas boys used more assertive speech than did girls. However, the average effect sizes were either negligible (talkativeness, d=0.11; assertive speech, d=0.11) or small (affiliative speech, d=0.26). Larger effect sizes were indicated for some language constructs depending on either the operational definition of the language measure, the method of recording, the child's age level, the interaction partner (adult or peer), group size, gender composition, observational setting, or type of activity. The results are interpreted in relation to social-developmental and social-constructionist approaches to gender; these views are presented as complementary--rather than competing--meta-theoretical viewpoints.     

Subjective career success: A meta-analytic review

This study proposes that employees have to face a variety of obstacles over the course of their careers, each of which can create stress for employees and, in so doing, lower their subjective career success (SCS). Using a meta-analysis of 216 samples published over the past three decades (N = 94,090), we found that career hurdles associated with dispositional traits (e.g., low emotional stability), motivation (e.g., low work engagement), social networks (e.g. low supervisor support), and organizational and job support (e.g., job insecurity) were all significantly related to lower SCS. Counter to expectations, background-related hurdles (e.g., being female) and skill-related hurdles (e.g., lack of job changes and international experience) were not significantly related to SCS.     

Chronic pelvic pain: A meta-analytic review

Abstract

Chronic pelvic pain (CPP) in women of reproductive age is a common complaint; for many women no identifiable pathology can be found. Research has suggested that women who have chronic pelvic pain without obvious pathology differ on a range of psychological characteristics, such as anxiety and depression, compared with those with identified pathology. A meta-analysis of 22 studies was undertaken to clarify these issues. Results showed that there were no significant differences on a range of psychological variables between women who were identified, via laparoscopy and clinical judgement, as having organic disorders and those who were not so identified. When women with chronic pelvic pain were compared with pain-free groups a profile of elevated depression, anxiety, neuroticism and psychopathology was found which is consistent with findings from studies of other painful conditions.     

The generation effect: A meta-analytic review

The generation effect refers to the finding that subjects who generate information (e.g., produce synonyms) remember the information better than they do material that they simply read. Meta-analytic techniques were used to summarize 445 effect sizes over 86 studies, thereby assessing the magnitude and 11 potential moderators of the generation effect. The size of the generation effect across the 86 studies was .40--a benefit of almost half a standard deviation of generation over reading. The variability of the effect size due to moderator type was substantial, and we attempted to use this information to clarify several theories that have been proposed to explain the generation effect.     

Age-related differences in performance on the Wisconsin card sorting test: a meta-analytic review

Two meta-analyses investigating age-related differences in performance on a popular measure of executive function, the Wisconsin Card Sorting Test (WCST), are reported. The 1st meta-analysis examined age-related changes in performance for the number of categories achieved, and the 2nd meta-analysis examined performance for the number of perseverative errors committed. Results indicated that robust age differences were present on both measures. Further analysis of moderator variables revealed reliable effects of education and test version on both measures, whereas test modality led to marginally significant differences in effect sizes obtained only for the number of categories achieved. Findings are discussed along with current accounts of age differences in performance of the WCST.     

A meta-analytic review of gender variations in adults' language use: talkativeness, affiliative speech, and assertive speech.

Three separate sets of meta-analyses were conducted of studies testing for gender differences in adults' talkativeness, affiliative speech, and assertive speech. Across independent samples, statistically significant but negligible average effects sizes were obtained with all three language constructs: Contrary to the prediction, men were more talkative (d = -.14) than were women. As expected, men used more assertive speech (d = .09), whereas women used more affiliative speech (d = .12). In addition, 17 moderator variables were tested that included aspects of the interactive context (e.g., familiarity, gender composition, activity), measurement qualities (e.g., operational definition, observation length), and publication characteristics (e.g., author gender, publication source). Depending on particular moderators, more meaningful effect sizes (d > .2) occurred for each language construct. In addition, the direction of some gender differences was significantly reversed under particular conditions. The results are interpreted in relation to social-constructionist, socialization, and biological interpretations of gender-related variations in social behavior.     

A meta-analytic review of prospective memory and aging

A meta-analysis of prospective memory (PM) studies revealed that in laboratory settings younger participants outperform older participants on tests of both time- and event-based PM (rs=-.39 and -.34, respectively). Event-based PM tasks that impose higher levels of controlled strategic demand are associated with significantly larger age effects than event-based PM tasks that are supported by relatively more automatic processes (rs=-.40 vs. -.14, respectively). However, contrary to the prevailing view in the literature, retrospective memory as measured by free recall is associated with significantly greater age-related decline (r=-.52) than PM, and older participants perform substantially better than their younger counterparts in naturalistic PM studies (rs=.35 and.52 for event- and time-based PM, respectively).