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The purpose of this article was to examine the validity of self-reported pedometer steps/day. Forty-seven participants were provided a New Lifestyles NL-2000 (NL-2000; Lees Summit, MO, USA) pedometer and a physical activity (PA) diary for 3 weeks, but not informed of the data-storing capabilities. For weeks 2 and 3, each participant was given a step goal of 3,000 steps/day above week 1 average. A 2 × 3 repeated measures analysis of variance (ANOVA) was used to examine differences between reported steps/day. Bland–Altman plots assessed the mean bias and limits of agreement between reporting methods. Mean self-reported and NL-2000 steps/day were 9,264 ± 3,555 and 8,971 ± 3,590 steps/day (n = 26, p > .05). Mean biases were 216 ± 1,753 (week 1), –506 ± 1,355 (week 2), and –590 ± 1,360 (week 3) steps/day. Negative mean bias values indicate higher self-reported steps/day. Mean steps/day were similar between recording methods, but large differences were observed among individuals, suggesting self-reported steps/day may be valid for PA research at the population level, but not the individual level.  相似文献   
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Cluster analysis was used to identify groups defined by the patterning of fathers' and mothers' sources of knowledge about adolescents' experiences in a sample of 179 families with adolescents (M = 16.5 years). Three clusters emerged for fathers (relational, relies on spouse, relies on others) and mothers (relational, questioners, relies on others). Cluster membership was associated with socioeconomic status, work hours, personal characteristics, and parent-child relationship quality. Longitudinal path analyses revealed that knowledge sources predicted levels of knowledge, which in turn predicted risky behavior 1 year later, indirect paths that were more consistent for fathers than for mothers. Although direct associations between sources of knowledge and subsequent risky behavior were scant, when fathers relied on spouses, youth engaged in less risky behavior.  相似文献   
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We studied the extent of sex-typing across different areas of child functioning (personality, interests, activities) in middle childhood as a function of the traditionality of parents' gender role attitudes and the sex composition of the sibling dyad. Participants included 200 firstborn children ( mean = 10.4 years old), their secondborn siblings ( mean = 7.7 years old) and their mothers and fathers. Family members were interviewed in their homes about their attitudes and personal characteristics and completed a series of seven evening telephone interviews about their daily activities. We measured children's attitudes, personality characteristics, and interests in sex-typed leisure activities (e.g., sports, handicrafts) as well as time spent in sex-typed leisure activities and household tasks (e.g., washing dishes, home repairs) and with same and opposite sex companions (i.e., parents, peers). Analyses revealed that sex-typing was most evident in children's interests and activities. Further, comparisons of girls versus boys and sisters versus brothers revealed that differences in children's sex-typing as a function of fathers' attitudes and sibling sex constellation were most apparent for children's activities. A notable exception was sex-typed peer involvement; time spent with same versus opposite sex peers was impervious to context effects. Analyses focused on children's sex-typing as a function of mothers' attitudes generally were nonsignificant.  相似文献   
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We studied patterns of mothers' and fathers' differential treatment of firstborn (average age 10.5 years) and secondborn (average age 8 years) school-age siblings, and we examined the links between parents' differential treatment and children's well-being and dyadic family relationships. Mothers, fathers, and both siblings in 110 families were interviewed in their homes. For each dimension of parental behavior that we assessed (i.e., differential affection and discipline) we created groups of families that reflected mothers' and fathers' levels of differential treatment (e.g., discipline the firstborn more, equal treatment, discipline the secondborn more). Although we detected substantial correspondence between the 2 parents' differential treatment, we found a sizable group of families in which parents' reports were incongruent (i.e., 1 parent reported equal and the other differential treatment). Parental patterns were linked to differences between the siblings' well-being and both sibling and parent-child relationships, with younger siblings exhibiting greater vulnerability to differential treatment. Incongruence in differential warmth was associated with marital distress.  相似文献   
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This study examines the connections between having a sister versus a brother and coming from a same-sex versus an opposite-sex sibling dyad and the degree of sex-typing in adolescents' friendship experiences, including the qualities of their friendships (i.e., intimacy, control) and their friends' personal attributes (i.e., sex-typed leisure interests, expressive and instrumental personality qualities). Participants were 159 firstborn-secondborn adolescent sibling pairs (M = 14.94 years and M = 12.43 years, respectively) and a close friend of each sibling (N = 636, including siblings and friends). Data were collected during home visits with siblings and telephone interviews with friends of siblings. The results suggested that sisters may learn control tactics from their brothers that they apply in their friendships; boys, however, were less likely to model the emotional intimacy that characterized their sisters' experiences with friends. In addition, coming from an opposite-sex sibling dyad was linked to sex-typing in friends' personal attributes, particularly their masculine leisure interests and instrumental personality qualities. Sisters and brothers may provide unique opportunities to learn about sex-typed relationship experiences in early adolescence, a time when gender segregation in the peer context is pervasive.  相似文献   
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This study examined the developmental course and adjustment correlates of time with peers from age 8 to 18. On seven occasions over 8 years, the two eldest siblings from 201 European American, working‐ and middle‐class families provided questionnaire and/or phone diary data. Multilevel models revealed that girls' time with mixed‐/opposite‐sex peers increased beginning in middle childhood, but boys' time increased beginning in early adolescence. For both girls and boys, time with same‐sex peers peaked in middle adolescence. At the within‐person level, unsupervised time with mixed‐/opposite‐sex peers longitudinally predicted problem behaviors and depressive symptoms, and supervised time with mixed‐/opposite‐sex peers longitudinally predicted better school performance. Findings highlight the importance of social context in understanding peer involvement and its implications for youth development.  相似文献   
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We examined sex-typed housework of children from dual- and single-earner families and its implications for children's adjustment as a function of congruencies between children's work and parents' sex-role behaviors and attitudes. Participants were 152 firstborn 9-12-year-olds (85 girls, 67 boys) and their parents. All fathers and 50% of mothers were employed. In home interviews parents rated their sex-role attitudes, and children rated their competence, stress, and parent-child relationships. In 7 nightly telephone interviews, children and parents described their household tasks for that day. Analyses revealed sex and earner-status differences in children's and parents' involvement in traditionally feminine and masculine tasks. Correlations between levels of parents' and children's task involvement were significant only in the case of fathers and sons in single-earner families. Regarding the connections between task performance and child adjustment, we found that incongruency between boys' sex-typed tasks and their fathers' sex-role behaviors and attitudes was linked to poorer psychosocial functioning, a pattern that did not hold for girls.  相似文献   
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The Family Context of Gender Intensification in Early Adolescence   总被引:1,自引:2,他引:1  
This longitudinal study of 144 young adolescents (ages 9–11 at phase 1) examined the hypothesis that boys and girls would experience increased "gender-differential socialization" across a 1-year period in early adolescence, and that such patterns would be stronger in families in which ( a ) parents maintained a traditional division of labor, and ( b ) there was a younger sibling of the opposite gender. Longitudinal analyses of 3 aspects of family socialization (adolescents' participation in "feminine" and "masculine" household chores; adolescents' involvement in dyadic activities with mothers and fathers; parental monitoring) revealed that gender intensification was apparent for some aspects of family socialization but not others. In addition, when gender intensification was apparent, it generally emerged in some family contexts but not in others. Only dyadic parent-adolescent involvement was characterized by an overall pattern of gender intensification in which girls became increasingly involved with their mothers and boys with their fathers; this pattern was exacerbated in contexts where adolescents had a younger, opposite-sex sibling.  相似文献   
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