Sex differences in competition—cooperation behavior of children at two age levels

Competitive or cooperative behaviors of children were observed in two experiments. In Experiment 1, 7- to 9-year-old boys and girls played a board game with same- or opposite-sex partners under instructions which stressed either group or individual performance. Girls' behavior varied as a function of both instructions and partner sex. Girls playing the game with boys showed more highly competitive behavior than did girls who played the game with girls. Boys were highly competitive under all conditions. In Experiment 2, preschool children were observed in a similar game. For both sexes, children who played the game with opposite-sex partners were more competitive and obtained fewer rewards than those who interacted with same-sex partners. Thus, with development, boys show a change from selective competitiveness to a very general tendency to compete, while girls show a consistent tendency to vary their game behavior according to situational cues such as those provided by instructions or the sex of a game partner.A report of the first experiment was made at the Third Biennial Southeastern Conference of the Society for Research in Child Development, Chapel Hill, March 1974. The authors would like to thank the personnel of St. Francis Cabrini School and the Children's House Montessori School of New Orleans, Louisiana, for their cooperation in providing research participants.     

Children's occupational sex-typing

Preschool and elmentary school children responded to questions measuring sex-typing of attribution (who would like this job), service preference (who the child would choose to do this job), and personal job choice (would the child like to do this job) dimensions for each of nine jobs, and stated a free-choice job preference. A subsample completed a cognitive classification measure. With age through second grade attribution and service preference sex-typing increased; generally, the match scores between the three aspects and census reality increased; the use of sex-typed categories in service preference decreased. For some aspects, girls were less sex-typed than boys; for others, each sex showed own-sex bias. Age, not classification skill, accounted for more variance in the sex-typing measures.This research was supported in part by an Indiana University Grant-in-Aid for dissertation research awarded to the first author. A shorter version of this article was presented as a paper at the annual meeting of the American Psychological Association, Toronto, 1978. The authors would like to thank the children, parents, and school personnel in all five cooperating schools, including Central Elementary School, David Satter, Principal; Children's Corner Cooperative Nursery School, Sue Yamaguchi, Director; Christian Center Day Care Preschool, Monroe County United Ministries, James Fisbo, Executive Director, Jean K. Lloyd, Preschool Director; St. Charles School, Kathleen Fleming, Principal.     

Sex differences in expressive drawing

We examined sex differences in expressive drawings produced by 105 boys and 105 girls aged 9-15 years. The drawings were classified according to the type of expressive strategy used to depict emotion (literal, content, abstract, or any combination of these), and rated according to the complexity of that strategy. A creative/divergent thinking task (figural form) was used to assess the relationship between expressive drawing and figural creativity. As predicted, girls scored higher than boys on the expressive drawing task. Specifically, girls relied less often on literal strategies alone and were more likely to combine literal expression with metaphorical (content and abstract) expression than boys. There was a linear relationship between expressive drawing and divergent thinking scores. These results are consistent with the idea that boys and girls differ in the expressive component of emotion, and suggest that these sex differences extend to the expressive drawing domain. They also suggest that divergent thinking may be involved in the ability to draw expressively.     

Sex Differences in Referral Rates of Children with Gender Identity Disorder: Some Hypotheses

From 1978 through 1995, a sex ratio of 6.6:1 of boys to girls (N = 275) was observed for children referred to a specialty clinic for gender identity disorder. This article attempts to evaluate several hypotheses regarding the marked sex disparity in referral rates. The sexes did not differ on four demographic variables (age at referral, IQ, and parent's social class and marital status) and on five indices of general behavior problems on the Child Behavior Checklist; in addition, there was only equivocal evidence that boys with gender identity disorder had significantly poorer peer relations than girls with gender identity disorder. Although the percentage of boys and girls who met the complete DSM-III-R criteria for gender identity disorder was comparable, other measures of sex-typed behavior showed that the girls had more extreme cross-gender behavior than the boys. Coupled with external evidence that cross-gender behavior is less tolerated in boys than in girls by both peers and adults, it is concluded that social factors partly account for the sex difference in referral rates. Girls appear to require a higher threshold than boys for cross-gender behavior before they are referred for clinical assessment.     

Girls who use "masculine" problem-solving strategies on a spatial task: proposed genetic and environmental factors.

This study investigated strategy and performance differences between right-handed boys and girls on a mental rotation task. Based on predictions from Casey and Brabeck's (1990) theory of sex differences, the study was also designed to identify a target group of right-handed girls with the optimal combination of genetic and environmental factors (high math/science achievers with nonright-handed immediate relatives). They were predicted to show strategies and performance more similar to those of the boys than to those of both the low math/science achieving girls and the high math/science girls with all right-handed immediate relatives (predicted to have the nonoptimal genotype). Strategy preference was measured using selective interference, whereby subjects solved mental rotation items concurrently with either verbal or visual-spatial interference tasks. Group comparisons were made on the amount of decrement in mental rotation performance as a result of the two types of interference tasks. This provided a basis for comparing the groups on the use of visual-spatial or verbal strategies on the mental rotation task. The boys: (1) did not show a significant advantage over the girls on the mental rotation items, but (2) did depend more on visual-spatial strategies than the girls, and (3) depended less on verbal strategies than the girls. The target girls: (1) outperformed the low math/science achieving girls on the mental rotation items and did not show a significant advantage over the other high math/science group, (2) depended more on visual-spatial strategies than both the other two groups of girls, and (3) depended less on verbal strategies than the low math/science girls, while showing no significant difference compared to the nonoptimal high math/science girls. Examining within-group differences, the boys preferred visual-spatial strategies, while the girls in both the nontarget groups preferred verbal ones. However, for the target girls, no within-subject strategy differences were found. The present findings support the theory that, like the boys, the target girls depend more on visual-spatial strategies than do other girls. It is possible that the target girls use a combination of visual-spatial and verbal strategies when solving mental rotation tasks.     

Sex differences in genetic and environmental influences on DSM-III-R attention-deficit/hyperactivity disorder

Approximately 5% of children are affected by attention-deficit/hyperactivity disorder (ADHD), and more boys are affected than girls. This study examined the magnitude of genetic and environmental influences on ADHD and several questions regarding sex differences in its prevalence and liability. The participants were 2,391 twin and sibling pairs from Australia, ages 3-18. ADHD symptoms in the general population were highly heritable (h2 = .85-.90), as were deviant ADHD scores in the selected population. The magnitude of familial influences was similar for boys and girls, although there were shared environmental influences on ADHD in girls but not boys and dominance genetic influences on ADHD in boys but not girls. Specific genetic and environmental influences were highly similar for boys and girls. Evidence supported the polygenic multiple threshold model rather than the constitutional variability model of sex differences in ADHD.     

Sex differences in the relationship of height to children's actual and attributed social and cognitive competencies

In three studies, the relationship of children's height to both (a) adults' attributions regarding the children and (b) preschoolers' social and cognitive competencies were examined. Sex differences were consistent with stereotypic conceptions. In the first two studies, mothers of preschool children rated photographs of toddlers varying in height on a variety of social and cognitive abilities. The mothers also assigned punishment to the children for hypothetical transgressions. In Experiment 1, mothers rated the large boys as more competent than the average-sized and small boys (even when effects of mothers' perceptions of the children's ages were covaried). In Experiment 2, involving female stimuli, mothers rated small girls as being less able (especially less independent) than average-sized or tall girls. While the effect of height on mothers' attributions was still evident when the effects of perceived age of the children were covaried, the pattern of results was less clear. Mothers assigned more punishment to tall girls (but not tall boys) than to small girls regardless of perceptions of age. In Experiment 3, height was associated with boys', but not girls', competence on tasks of logical ability and boys' sociometric nominations of whom they prefer to play with (significant for girls, marginally significant for boys). Height was not highly correlated with peers' perceptions of competence. The implications of the research for the socialization process are discussed.The authors wish to express their gratitude to the parents, teachers, and children at the Child Study Laboratory, Students' Child Center, Palo Alto Preschools, and Tempe Preschool. The authors would also like to thank Michael Gunzelman, Michelle White, Julie Mankowski, Marsha Kaplan, and Melissa Rook for their able assistance in data collection.     

Biases in ratings of disruptive behavior in children: effects of sex and negative halos

OBJECTIVE: Behavior disorders are more prevalent among boys than girls, but the etiology of this difference is unclear. Studies have not tested for sex bias in ratings as a contributing factor to the differential sex prevalence rates. However, there are several studies showing "negative halo effects" in ratings of boys (i.e., the presence of one type of behavior artificially inflating ratings of another behavior). These findings have only been extended to girls in one recent study. The current study is designed to test for sex difference in (a) ratings of boys and girls who exhibit the same degree of disruptive behavior and (b) negative halo effects. METHOD: Two hundred and thirty-nine college students participated. Sex differences in ratings are not found. Nonetheless, bidirectional negative halo effects are found for boys and girls (i.e., the presence of oppositionality artificially increased ratings of inattention and hyperactivity; the presence of inattention and hyperactivity artificially increased oppositionality).     

Adolescents' expectancies of success,self-evaluations,and attributions about performance on spatial and verbal tasks

The present study examined the expectancies of success, evaluations of performance, and achievement-related attributions that high school students made about verbal and spatial tasks that typically show sex differences. Although no sex differences were found in task performance, boys expected to do better than girls on both the spatial and verbal tasks. After completing the task, the girls continued to evaluate their performance more negatively than did boys on the spatial tasks. On spatial tasks girls also attributed to themselves less ability and saw the tasks as being more difficult than did boys. The results suggest that there are generalized, rather than task-specific, sex differences in achievement expectancies, evaluations, and attributions. These findings are discussed in terms of their implications for sex-related differences in cognitive functioning and subsequent achievement behaviors.The authors gratefully acknowledge support from the Judith Offer Fund and from the Spencer Foundation.     

Sex-role imitation in children: Effects of sex of child,sex of model,and sex-role appropriateness of modeled behavior

The qualifying influence of the sex-role appropriateness of observed behavior on children's same-sex imitation was investigated. In each of two studies employing a 2×2×2 design, girls and boys observed a live male or female model display appropriate (to the child's sex) or inappropriate behavior. Results that were consistent in both studies indicated an interaction between sex of child and appropriateness. Boys imitated less when exposed to the inappropriate than to the appropriate sequence. An interaction between sex of child and sex of observer was obtained on only one measure in Experiment I (girls responded more quickly to a female than to a male model). In this study, girls also displayed greater opposite-sex imitation than boys; in Experiment II, there were no differences between boys and girls in either same- or opposite-sex imitation. The results are discussed with regard to the same-sex hypothesis and the differential impact of sex-role factors on boys and girls.The authors wish to thank the children, parents, and staff of Forest Park Elementary School for their participation and cooperation in the conduct of this study. Special thanks are extended to Mr. Paul H. Daby, Principal. The contribution of the undergraduate models and experimenters is also acknowledged.     

中学生学习策略量表编制的研究

在自我调节学习理论、信息加工理论和国内外有关学习策略研究的基础上,根据我国中学生学习的实际情况编制了中学生学习策略量表,并进行了信度、效度检验。研究发现中学生运用学习策略有如下特点：①在使用学习策略方面存在着年级差异,有随年级增长递减的趋势;②女生在调控策略水平上显著高于男生,而男生在认知策略水平上略高于女生。     

Sex differences in the original thinking of preschool and elementary school children

Abstract:

The purpose of this study was to assess the development of sex differences in the creative potential of preschool and early elementary school children. Preschool, first‐, and third‐grade children (N = 188) received the Multidimensional Stimulus Fluency Measure (MSFM). The MSFM assesses creative potential in terms of popular and original responses (ideational fluency). Comparisons of the three groups of children indicated that sex differences emerged throughout early elementary school. No sex differences were found within the preschool sample; but by third‐grade, boys were found to score significantly higher than girls on both popular and original responses. These findings were discussed with regard to evaluation, conformity, assimilative strategies, and the environmental factors which might affect creative potential.     

Parent perceptions and attributions for children's math achievement

From junior high school on, girls report lower estimations of their math ability and express more negative attitudes about math than do boys, despite equivalent performance in grades. Parents show this same sex-typed bias. This paper examines the role that attributions may play in explaining these sex differences in parents' perceptions of their children's math ability. Mothers and fathers of 48 junior high school boys and girls of high, average, and low math ability completed questionnaires about their perceptions of their child's ability and effort in math, and their causal attributions for their child's successful and unsuccessful math performances. Parents' math-related perceptions and attributions varied with their child's level of math ability and gender. Parents credited daughters with more effort than sons, and sons with more talent than daughters for successful math performances. These attributional patterns predicted sex-linked variations in parents' ratings of their child's effort and talent. No sex of child effects emerged for failure attributions; instead, lack of effort was seen as the most important, and lack of ability as the least important, cause of unsuccessful math performances for both boys and girls. Implications of these attributions for parents' influence on children's developing self-concept of math ability, future expectancies, and subsequent achievement behaviors are discussed.This paper is based on a master's thesis by the first author. This research was funded by grants to Jacquelynne S. Eccles from the following agencies: the Foundation for Child Development, the National Institute of Mental Health, and the National Institute of Child Health and Development.We wish to express our thanks to Linda Buford, Sandra Hamman, and Samuel D. Miller, who helped collect and code these data, and especially to the parents, students, and teachers in the Ann Arbor Public School district, whose cooperation made this project possible.     

The importance of gesture in children's spatial reasoning

On average, men outperform women on mental rotation tasks. Even boys as young as 4 1/2 perform better than girls on simplified spatial transformation tasks. The goal of our study was to explore ways of improving 5-year-olds' performance on a spatial transformation task and to examine the strategies children use to solve this task. We found that boys performed better than girls before training and that both boys and girls improved with training, whether they were given explicit instruction or just practice. Regardless of training condition, the more children gestured about moving the pieces when asked to explain how they solved the spatial transformation task, the better they performed on the task, with boys gesturing about movement significantly more (and performing better) than girls. Gesture thus provides useful information about children's spatial strategies, raising the possibility that gesture training may be particularly effective in improving children's mental rotation skills.     

Developmental and Sex Differences in Types of Conduct Problems

Maternal report of types of conduct problems in a high-risk sample of 228 boys and 80 girls (ages 4–18) were examined, using a version of the Child Behavior Checklist, expanded to include a range of covert and overt antisocial items (stealing, lying, physical aggression, relational aggression, substance use, and impulsivity). Age and sex effects were investigated. Boys were significantly more physically aggressive than girls. There were no sex differences for stealing, lying, relational aggression, and substance use. Lying and substance use increased with age, whereas relational aggression and impulsivity peaked during early adolescence. A small group of girls had pervasive conduct problems across multiple domains. For some domains such as stealing, lying, and relational aggression, girls showed at least as many problems as boys. Girls, in general, tended to have fewer conduct problems. On the other hand, when assessed across multiple domains, conduct problems in high-risk girls were possibly more pervasive than in high-risk boys, suggesting the possibility of a gender paradox.     

Early sex differences in spatial skill.

This study investigated sex differences in young children's spatial skill. The authors developed a spatial transformation task, which showed a substantial male advantage by age 4 years 6 months. The size of this advantage was no more robust for rotation items than for translation items. This finding contrasts with studies of older children and adults, which report that sex differences are largest on mental rotation tasks. Comparable performance of boys and girls on a vocabulary task indicated that the male advantage on the spatial task was not attributable to an overall intellectual advantage of boys in the sample.     

The effects of sex differences and evaluation on task performance and aspiration

An investigation was conducted of how evaluation differentially affects the performance and aspiration for future performance of 118 high school boys and girls. Subjects were selected to fit into either a superior or average intelligence group. In the high evaluation condition, subjects were instructed that their intelligence was being evaluated in anagram and visual-motor tasks they performed, while those in the low evaluation condition were instructed that the two tasks were being correlated. It was hypothesized that on a highly evaluated task, girls, when compared to boys, would show greater performance debilitation and would have lower aspirations for future performance. Although sex differences were found in performance debilitation and aspiration for future performance, they were not all in the predicted directions. Girls were equally debilitated in anagram performance under both evaluation conditions, while boys were debilitated in anagram performance only under high evaluation. When both boys and girls demonstrated a performance debilitation on the anagram task, their performance declined approximately 10%. No sex differences in performance were found on the visual-motor task. On both tasks, girls' aspirations were significantly affected by evaluation condition. The girls averaged 89% choosing the more difficult task in the low evaluation condition. Evaluation condition had no significant effect on aspiration for boys on either task. Intelligence showed no significant relationships.     

Gender Differences in Preschoolers' and Kindergartners' Artistic Production and Preference

There are striking differences between boys' andgirls' art during the elementary school years, but it isunknown whether such artistic gender differences emergeearlier in childhood. We tested 20 preschoolers (12 boys, 8 girls) and 29 kindergartners (15boys, 14 girls), most White and middle-class, on threetasks to assess gender-stereotypicality in theirdrawings and preferences for pictures. As predicted, in a production task, boys and girls drewgender stereotypical pictures, though neither group wasextremely stereotypical. Interestingly, evenpre-representational preschoolers' scribbles were ratedas gender-stereotypical, despite the absence ofidentifiable thematic content. In a second task,children chose coloring-book sheets, previously ratedfor gender-stereotypicality, which they expected tocolor. Boys chose masculine and girls chose femininesheets. In a third task, boys and girls preferredgender-stereotypical pictures and were similar in howstrongly stereotypic their choices were. The tasksdemonstrate that gender differences in artistic productionand preference emerge in the preschool years, earlierthan previously reported. Beneficial future work wouldaddress relations between children's artistic production and preference and their genderschema flexibility and socializationexperiences.     

Sex differences in childhood sexual abuse and suicide-related behaviors

Child sexual abuse and suicide-related behaviors are associated, but it remains unclear if the strength of this association differs in boys and girls. In a systematic review of this association in children and youth, we identified 16 relevant studies, all cross-sectional surveys of students. The association is stronger in boys specific to suicide attempt(s). Adjustments for potential confounding variables explained some, but not all of this sex difference. While additional research would strengthen causal inferences, this sex difference may be influenced by the nature and timing of child sexual abuse as well as the sex of the perpetrator, which in turn shapes the disclosure of these events.