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1.
Drawing on Belsky, Steinberg, and Draper's evolutionary theory of the development of reproductive strategies, we tested a model of individual differences in girls' pubertal timing. This model posits that a history of psychopathology in mothers results in earlier pubertal maturation in daughters, and that this effect is mediated by discordant family relationships and father absence/ stepfather presence. The model was supported in a short-term longitudinal study of 87 adolescent girls. In the primary test of the model, it was found that a history of mood disorders in mothers predicted earlier pubertal timing in daughters, and this relation was fully mediated by dyadic stress and biological father absence. In families in which the mother's romantic partner was not the biological father, dyadic stress accounted for almost half of the variation in daughters' pubertal timing. Stepfather presence, rather than biological father absence, best accounted for earlier pubertal maturation in girls living apart from their biological fathers. We propose that stepfather presence and stressful family relationships constitute separate paths to early pubertal maturation in girls.  相似文献   

2.
Family rearing antecedents of pubertal timing   总被引：5，自引：2，他引：3  
Two general evolutionary hypotheses were tested on 756 White children (397 girls) studied longitudinally: (1) rearing experiences would predict pubertal timing; and (2) children would prove differentially susceptible to rearing. Analysis of pubertal measurements, including some based on repeated physical assessments, showed that mothering and fathering, earlier and later in childhood, predicted pubertal development, but only for girls, with negative parenting appearing most influential; maternal harsh control predicted earlier menarche. Rearing effects varied by infant negative emotionality, proving stronger (and opposite) for girls who in infancy were lower rather than higher in negativity. Maternal menarche, controlled in all analyses, was a stronger predictor than rearing. Findings are discussed in terms of theory development, genetic and nutritional influences, and sample restrictions.  相似文献   

3.
Ellis BJ  Essex MJ 《Child development》2007,78(6):1799-1817
Life history theorists have proposed that humans have evolved to be sensitive to specific features of early childhood environments and that exposure to different environments biases children toward development of different reproductive strategies, including differential pubertal timing. The current research provides a longitudinal test of this theory. Assessments of family environments, based on interviews with mothers and fathers, were conducted in preschool, and children were then followed prospectively through middle childhood. Adrenal hormones were assayed in a selected subsample of 120 children (73 girls) at age 7, and parent and child reports of secondary sexual characteristics were collected in the full female sample of 180 girls at age 11. Higher quality parental investment (from both mothers and fathers) and less father-reported Marital Conflict/Depression forecast later adrenarche. Older age at menarche in mothers, higher socioeconomic status, greater mother-based Parental Supportiveness, and lower third-grade body mass index each uniquely and significantly predicted later sexual development in daughters. Consistent with a life history perspective, quality of parental investment emerged as a central feature of the proximal family environment in relation to pubertal timing.  相似文献   

4.
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5.
Executive control (EC) is related to mathematics performance in middle childhood. However, little is known regarding how EC and informal numeracy differentially support mathematics skill acquisition in preschoolers. A sample of preschoolers (115 girls, 113 boys), stratified by social risk, completed an EC task battery at 3 years, informal numeracy assessments at 3.75 and 4.5 years, and a broad mathematics assessment during kindergarten. Strong associations were observed between latent EC at age 3 and mathematics achievement in kindergarten, which remained robust after accounting for earlier informal numeracy, socioeconomic status, language and processing speed. Relations between EC and mathematics achievement were stronger in girls than in boys. Findings highlight the unique role of EC in predicting which children may have difficulty transitioning to formal mathematics instruction.  相似文献   

6.
The impact of father absence on early sexual activity and teenage pregnancy was investigated in longitudinal studies in the United States (N = 242) and New Zealand (N = 520), in which community samples of girls were followed prospectively from early in life (5 years) to approximately age 18. Greater exposure to father absence was strongly associated with elevated risk for early sexual activity and adolescent pregnancy. This elevated risk was either not explained (in the US. study) or only partly explained (in the New Zealand study) by familial, ecological, and personal disadvantages associated with father absence. After controlling for covariates, there was stronger and more consistent evidence of effects of father absence on early sexual activity and teenage pregnancy than on other behavioral or mental health problems or academic achievement. Effects of father absence are discussed in terms of life-course adversity, evolutionary psychology, social learning, and behavior genetic models.  相似文献   

7.
Psychology has considered the development of learning, but the development of teaching in childhood has not been considered. The data presented in this article demonstrate that children develop teaching skills over the course of middle childhood. Seventy-two Maya children (25 boys, 47 girls) ranging in age from 3 to 11 years (M = 6.8 years) were videotaped in sibling caretaking interactions with their 2-year-old brothers and sisters (18 boys, 18 girls). In the context of play, older siblings taught their younger siblings how to do everyday tasks such as washing and cooking. Ethnographic observations, discourse analyses, and quantification of discourse findings showed that children's teaching skills increased over the course of middle childhood. By the age of 4 years, children took responsibility for initiating teaching situations with their toddler siblings. By the age of 8 years, children were highly skilled in using talk combined with manual demonstrations, verbal feedback, explanations, and guiding the body of younger learners. Children's developing competence in teaching helped their younger siblings increase their participation in culturally important tasks.  相似文献   

8.
Objective. The present study looks at predictors that may be associated with father–child relationship quality and whether relationship quality appears to be transmitted across generations. Design. This study includes 2,970 U.S. families who participated in the Fragile Families and Child Well-Being Study. Structural equation modeling was used to assess associations between fathers’ relationship with paternal grandfathers (PGF) during their own childhood and when their own children are 1 year old, father involvement at age 1, and child reports of father-child relationship quality at age 9. Results. Paternal grandfathers involvement with fathers during childhood was positively associated with the father-paternal grandfathers relationship at child age 1, which in turn was associated with greater father involvement at age 1. More father involvement at age 1 was associated with child reports of better father-child relationships at age 9. The pathways from paternal grandfathers involvement during fathers’ childhood and father–paternal grandfathers relationships at age 1 to father–child relationship quality at age 9 were fully mediated by father involvement at age 1. Conclusions. Patterns of father involvement and the quality of father–child relationships tend to be passed down across generations. To ensure an active, positive father involvement and its associated benefits for children, parenting interventions should focus promoting positive fathering behaviors to promote positive relationships with children in their own and future generations.  相似文献   

9.
Mutual antipathies (when two children or adolescents dislike one another) were studied among 2,348 school-age children and 2,768 adolescents to determine incidence, gender and age differences, and implications for social adjustment. The children were more frequently involved than were the adolescents in same-sex antipathies but not mixed-sex ones. Boys were involved more frequently than were girls in same-sex antipathies, but involvement in mixed-sex antipathies was comparable for the two genders. With peer rejection scores used as a covariate, same-sex antipathies were associated with antisocial behavior and social withdrawal among children and adolescents of both genders and, in addition, to emotionality and lack of friendship support among adolescents. Mixed-sex antipathies were related to social adjustment depending on gender: these antipathies were related to antisocial and bullying behavior in boys but not girls; and to nonaggressiveness, victimization, lesser cooperation, shyness, and depression in girls but not boys. Mutual antipathies thus appear to be concomitants of adaptational risk in both childhood and adolescence.  相似文献   

10.
This study used a nationally representative sample of African American and Caribbean Black adolescent females to examine the relation between perceived pubertal timing relative to peers and discriminatory experiences. Participants included the 607 girls who participated in the National Survey of American Life-Adolescent (NSAL-A), and ranged in age from 13 to 17. Most African American girls perceived their development as on-time relative to their same-aged peers; whereas the majority of Caribbean Black girls perceived their development as earlier than their same-aged peers. The results indicated that girls who perceived that their pubertal development was earlier than their same-aged peers reported more general and racial discrimination experiences.  相似文献   

11.
This research analyses the extent to which the father in differentiating his role from that of the mother opens new aspects of the world to the child and influences the development of inter-subjectivity (Malrieu, 1986; Pinol-Douriez, 1984). A survey questionnaire was used in combination with semi-directive interviews concerned with paternal differentiation. The research population consisted of ten 9-month-old infants (5 boys and 5 girls) of differentiated fathers and ten 9-month-old infants (5 boys and 5 girls) of non-differentiated fathers. The research focused on inter-subjective processes in the young child by studying an interactive play situation with the father (5 min). The results show that children of differentiated fathers construct the outside world (human and non-human) through the opening provided by their father. Paternal differentiation exercises a favourable influence on the socio-affective development of the young child through his/her engagement in interaction with father.  相似文献   

12.
Relations among hormone levels, emotional dispositions, and aggressive attributes were examined in 56 boys and 52 girls, age 9 to 14 years. The adolescents represented all 5 stages of pubertal development. Serum levels of gonadotropins, gonadal steroids, adrenal androgens, and testosterone-estradiol binding globulin were assessed. Levels of these hormones were related to stage of pubertal development and were assumed to represent relatively stable biological characteristics. The emotional dispositions assessed were adolescent self-reported anger, nervousness, sadness, and impulse control. The aggressive attributes assessed were mother-reported acting out and aggressive behavior problems and rebellious and nasty characteristics. Hormone levels were related to emotional dispositions and aggressive attributes for boys but not for girls. For example, higher levels of androstenedione in boys were related to higher levels of acting-out behavior problems. Level of testosterone-estradiol binding globulin was negatively related to sad affect and acting out behavior.  相似文献   

13.
Parental response, physical coercion and warmth and their relationships with childhood aggression were assessed with 277 children (142 boys; M age = 56.5 months, SD = 10.93 months) in Hong Kong. Results indicated that both fathers and mothers reported significantly more intervention strategies in response to hypothetical vignettes of physical aggression than relational aggression. Both fathers’ and mothers’ self-reported physical coercion was positively correlated with boys’ and girls’ composite scores of physical and relational aggression as reported by teachers, fathers and mothers, whereas fathers’ self-reported warmth was associated with a lower level of physical and relational aggression in boys. Furthermore, maternal warmth moderated the association between physical coercion and girls’ relational aggression. Findings suggest that parents’ normative beliefs regarding relational aggression should be challenged and the general acceptability of parental control in the Chinese context does not necessarily imply the absence of a link with childhood aggression.  相似文献   

14.
A double-blind randomized controlled trial of n-3 long-chain polyunsaturated fatty acid (n-3 LCPUFA) supplementation or matching placebo during third trimester of pregnancy was conducted within the COPSAC2010 mother-child cohort consisting of 736 women and their children. The objective was to determine if maternal n-3 LCPUFA pregnancy supplementation affects offspring neurodevelopment until 6 years. Neurodevelopment was evaluated in 654 children assessing age of motor milestone achievement, language development, cognitive development, general neurodevelopment, and emotional and behavioral problems. Maternal n-3 LCPUFA supplementation during pregnancy improved early language development and reduced the impact of emotional and behavioral problems. The n-3 LCPUFA supplementation was in boys associated with the earlier achievement of gross motor milestones, improved cognitive development, and a reduced impact of emotional and behavioral problems.  相似文献   

15.
The Adaptive/Maladaptive Perfectionism Scale (AMPS; K.G. Rice & K.J. Preusser, 2002) was developed on samples of 9‐ to 11‐year‐old children. A primary purpose of the current research was to examine whether the AMPS could be useful in studies of adolescents, and in particular, studies of adolescent depression. This study of 145 early adolescents revealed (1) a somewhat different AMPS factor structure than has been evident in studies of younger children; (2) no significant mean differences between boys and girls on perfectionism, although girls were significantly more depressed than boys; (3) a pattern of perfectionism‐depression correlations that differed somewhat between boys and girls; and (4) several interactions of different dimensions of perfectionism in accounting for depression. Results are discussed by addressing differences between children and adolescents in school cultures, physical and psychological changes from childhood to adolescence, and the importance of considering the positive as well as the negative aspects of perfectionism among school‐age children. © 2007 Wiley Periodicals, Inc. Psychol Schs 44: 139–156, 2007.  相似文献   

16.
Childhood sexual abuse of boys was examined in a longitudinal cohort in South Africa, with data on abuse collected at six age points between 11 and 18 years. Potential personal and social vulnerability of male sexual abuse victims was explored and mental health outcomes of sexually abused boys were examined at age 22–23 years. Reports of all sexual activity – touching, oral and penetrative sex – increased with age and sexual coercion decreased with age. Almost all sexual activity at 11 years of age was coerced, with the highest rates of coercion occurring between 13 and14 years of age; 45% of reports of coerced touching were reported at age 14, 41 percent of coerced oral sex at age 13, and 31% of coerced penetrative sex at age 14. Sexual coercion was perpetrated most frequently by similar aged peers, and although gender of the assailant was less often reported, it can be presumed that perpetration is by males. Boys who experienced childhood sexual abuse tended to be smaller (shorter) and from poorer families. No relationships to measured childhood intelligence, pubertal stage, marital status of mother or presence of the father were found. There was no significant association between reports of childhood sexual abuse and mental health in adulthood and when personal and social vulnerabilities were taken into account.  相似文献   

17.
The present study investigated gender differences in social mastery motivation, vocabulary knowledge, behavioral self-regulation, and socioemotional skills and examined the relationships among this knowledge and these skills by gender. Participants were 134 Chinese children (68 boys, M age = 3.80; 66 girls, M age = 3.89) and their parents recruited through local kindergartens’ parent groups. The children were administered measures of social mastery motivation, vocabulary knowledge, behavioral self-regulation, and nonverbal intelligence. Parents reported their education level and children’s socioemotional skills. Research Findings: Results revealed that boys exhibited more social mastery interactions than girls, and girls showed better behavioral self-regulation and socioemotional skills than boys. Girls with higher social mastery interaction frequency demonstrated better vocabulary knowledge and socioemotional skills, whereas boys with higher social mastery interaction frequency showed lower behavioral self-regulation. Boys, who showed more positive affect during social mastery interactions, tended to have better expressive vocabulary, which facilitated their behavioral self-regulation. Practice or Policy: Findings highlight social mastery motivation as a potential factor that facilitates children’s early development, but it may contribute to boys and girls in different ways.  相似文献   

18.
In this study of two hundred and thirty 8‐ to 13‐year‐olds, a new “Silent Films” task is introduced, designed to address the dearth of research on theory of mind in older children by providing a film‐based analogue of F. G. E. Happé's (1994) Strange Stories task. Confirmatory factor analysis showed that all items from both tasks loaded onto a single theory‐of‐mind latent factor. With effects of verbal ability and family affluence controlled, theory‐of‐mind latent factor scores increased significantly with age, indicating that mentalizing skills continue to develop through middle childhood. Girls outperformed boys on the theory‐of‐mind latent factor, and the correlates of individual differences in theory of mind were gender specific: Low scores were related to loneliness in girls and to peer rejection in boys.  相似文献   

19.
This study was designed to examine whether first-grade boys' use of retrieval and first-grade girls' use of manipulatives reflected gender differences in their abilities to use these strategies or gender differences in preferences for strategy use. Eighty-four first-grade students, 42 boys and 42 girls, from two suburban elementary schools participated in this study. The children solved basic arithmetic problems under two conditions: a free-choice condition in which they were allowed to solve the problems any way they preferred and a game condition in which the children's strategy use was constrained so that all children used the same strategies on the same arithmetic problems. Strategy use during the free-choice session replicated the findings of earlier research indicating that girls tend to use strategies utilizing manipulatives and boys tend to use retrieval. During the game condition, when we controlled the types of strategies children used on different problems we found that boys were as able as girls to calculate solutions using manipulatives. Girls, however, were not as capable as boys in their retrieval of answers to arithmetic problems from memory. No differences were found in error rates or speed of retrieval. Gender differences were found in the variability of correct retrieval, with boys being significantly more variable than girls.  相似文献   

20.
The primary goal of this research was to use an experimental, observational method to study the development of anger expression during middle childhood. Eight-, 10-, and 12-year-old girls and boys (N = 382) were observed during a laboratory play session that was provoking in two ways: Participants lost a computer game they were playing for a desirable prize, and their play partner was a same-age, same-gender confederate actor who taunted them. Children's responses to the provoking play sessions--facial expressions, verbalizations, and gestures--were reliably coded. Overall, children in these age groups maintained a remarkable degree of composure. Girls made fewer negative comments than boys did, and fewer negative gestures. Older children maintained more neutral facial expressions, made fewer gestures, and were more likely to remain silent when provoked. When they spoke, older children made fewer negative comments, fewer remarks about the game, and fewer positive comments about themselves or the actor.  相似文献   

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