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Many writers have implicitly or explicitly stated that nonparametric tests are free from the assumption of homogeneity of variance. Nonparametric tests for difference in central tendencies generally involve the assumption of homogeneity of variance. The assumption of homogeneity of variance for the t test and for nonparametric tests serves the same purpose: it allows the user to draw more specific inferences when the null hypothesis is rejected.  相似文献   

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The aim of this study was to examine ritualistic behavior at its developmental peak. Children 20–59 months of age were sampled through a national system of daycare centers in Israel (N = 228). The order of onset of the ritual behaviors measured was virtually identical to that reported for an American sample (D. W. Evans et al., 1997). Gender and age effects were found for fearfulness but not for ritualistic behavior. Maternal reports of ritualistic behavior were highly correlated with reported fears, and with shy and emotional temperament. Mothers of the children who were in the top 10% in their use of rituals according to maternal report, worried about their child's ritualistic behavior, even though maternal worry was not correlated with ritualistic behavior for the whole distribution.  相似文献   

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ABSTRACT

Recent research has shown that from early in development, children selectively form new beliefs in response to information supplied by others. However, little is known about the development of selective revision of existing beliefs in response to socially conveyed information. Such selective social belief revision has been extensively studied by social psychologists in the context of advice-taking. Here, we adapted the methods of this research tradition for studying selective advice-taking in young children and adults. Participants solved a perceptual judgment task, received advice, and subsequently made final decisions. The informational access (perceptual quality) of participants and advisor were experimentally manipulated. Adults revised their judgments systematically as a function of both their own and the advisor’s informational access whereas children based their adjustments only on their own informational access. Two follow-up experiments suggest, however, that this pattern of results in children reflected performance rather than competence limitations: In suitably modified tasks, children did proficiently consider both their own informational situation and that of the advisor in their selective social belief revision.  相似文献   

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Recent research has demonstrated that social responsiveness (comprised of social awareness, social information processing, reciprocal social communication, social motivation, and repetitive/restricted interests) is continuously distributed within the general population. In the present study, we consider temperament as a co‐occurring source of individual differences in social responsiveness in young children. The sample consisted of 62 infants assessed at 2, 3, and 4 years old. Measures of temperament were obtained at each age (Early Childhood Behavior Questionnaire and Children's Behavior Questionnaire), and social responsiveness was measured at 4 years old (Social Responsiveness Scale). Multivariate patterns of association between components of temperament and social responsiveness were observed at each age, with overall findings in line with the broader literature examining temperament and socio‐development associations. Importantly, these results provide support for the usefulness of temperament as a relevant source of variability in social responsiveness, as measured by the Social Responsiveness Scale, in typically developing young children. Copyright © 2012 John Wiley & Sons, Ltd.  相似文献   

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Developmental studies have demonstrated the utility of select executive function (EF) tasks for the early diagnosis of specific learning-related problems (e.g., Snow, 1998). However, previous data demonstrating schooling effects on EF measures suggests potential pitfalls in clinical interpretation. In the present study three common EF measures, (Wisconsin Card Sort, Thurstone Word Fluency, and a mazes task) in addition to a VIQ estimating task, were administered to a cross-section of 115 children aged 7 to 9. Using a school-entrance cut-off design the unique contributions of formal schooling versus age-related changes to performance on the EF measures were examined. Schooling effects were both task and age-dependent supporting the conclusion that the proper use of EF measures with children in this age range depends upon consideration of factors beyond that usually depicted in net-effect models.  相似文献   

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幼儿心理理论与社会行为发展关系的初步研究   总被引:17,自引:1,他引:17       下载免费PDF全文
研究短期跟踪57名新进入幼儿园的幼儿,测查他们心理理论(theory of mind)和社会行为的发展水平.结果表明,幼儿心理理论的发展差异确实与他们的社会行为发展存在某种密切关系,但其与社会行为发展的不同方面似乎存在不同的关系模式.对这些不同的关系模式,文中分别从幼儿的心理状态认识、执行性控制能力发展和个性倾向等方面进行了探讨.  相似文献   

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This study concerns the influence of social contexts on young children's communication. The aim was to show that, at a very young age, children take into account the conversational context and certain conventions governing social relations. Iranian children's request behaviours were analyzed in three situations: (a) the adult immediately complies (satisfaction), (b) the adult asks a clarification question (clarification), and (c) the adult refuses to comply (refusal). Two groups of 12 children aged 18 and 30 months were observed in day-care centres during dyadic interaction with an Iranian adult. The verbal and nonverbal productions of the two groups were considered. The results showed that the children modified their behaviours in accordance with the adult's attitude. Comparison with a study conducted in France suggests that reformulations in the clarification situation are similar in the two cultures. The intercultural differences observed concern both overall request production and the characteristics of reformulations in the refusal situation. These specificities reflect the early influence of cultural values concerning the difference between the social status of children and adults.  相似文献   

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Previous research has shown that disruptive behavior can impair students’ academic success (Pierce et al. in Remedial Spec Educ 25:175–188, 2004, https://doi.org/10.1177/07419325040250030501), as well as increase teacher’s stress level (Westling in Remedial Spec Educ 31:48–63, 2010, https://doi.org/10.1177/0741932508327466). The Class Pass Intervention (CPI) is a Tier 2 intervention designed to decrease disruptive behavior and increase academic engagement; however, few studies have evaluated the efficacy of CPI. The purpose of this study was to assess the effects of CPI on disruptive behavior and academic engagement of young students who engage in disruptive behavior. This study used a non-concurrent multiple baseline design to assess experimental control. In the current study, CPI led to a decrease in disruptive behavior and an increase in academic engagement for all three participants and these levels persisted throughout schedule thinning. In addition, results of teacher and student social validity assessments indicated that the intervention was effective and easy to implement and that students preferred the intervention.

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The behavioral effects of high and low spatial density on normal children of ages 4 and 5 were examined. Sixty Ss were observed in groups of six in a free-play situation under both density conditions. Results showed that there was significantly less aggression and less social interaction in the high-density condition than in the low-dcnsity condition. Thcrc was a significant Density X Sex effect o n aggression and signficant main effects of sex on aggression, nurturance, number of interruptions, and number of children interacted with. Several complexities in researching and explaining the effects of density on behaviors are discussed.  相似文献   

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This study examined the factor structure and discriminative validity of the Eyberg Child Behavior Inventory (ECBI) with community-based and clinic-referred samples of young children (2–6 years). In the community sample, confirmatory factor analysis indicated a three-factor structure with components reflecting Inattentive, Oppositional Defiant, and Conduct Problem Behavior. In the clinic sample, component scores differentiated children with specific behavior problems from children without significant externalizing symptoms. However, component scores did not differentiate within the externalizing spectrum. The data suggest that ECBI components may be useful to screen community-based and clinic-referred young children for externalizing symptoms, but may be less useful to identify children with specific behavior problems.  相似文献   

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The relation between aggression and peer social status was investigated in a group of 238 third-through fifth-grade children. Peer social status refers to the degree to which a child is accepted by his or her peer group. By asking children to nominate peers they “like most” and “like least,” one can identify children who are popular, rejected, neglected, or viewed as average within their peer group. Results indicated low to moderate correlations between peer-nominated aggression and global indices of social acceptance. More specifically, it was found that aggressive children largely comprised the rejected and average social status groups, but not the popular or neglected groups. Furthermore, analyses indicated that according to both peers and teachers, aggressive/rejected children showed academic and social-skill deficits, whereas aggressive children of average peer status exhibited adequate adjustment similar to that of nonaggressive/average-status children. These results suggest the importance of considering peer social status when identifying aggressive children in need of intervention and in determining which skill deficits to address. In addition, knowledge of an aggressive child's peer status might be useful in enhancing the predictability of adult adjustment.  相似文献   

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The development and use of first line screening instruments is an essential first step in assessing behavior disorders in very young children. The Early Childhood Behavior Screen (ECBS) is a parent-report measure for behavior disorders and is normed on young children (1–5 years old) living in poverty. The current study presents psychometric support for the discriminative validity of the ECBS’s 10-item Challenging Behavior Scale (CBS) as a first-line screener for externalizing behavior problems for preschool aged-children in poverty. The study’s sample included 673 participants (M age years = 2.81; 63.2 % male; 65.8 % African American) that all met the federal definitional standard for living in poverty. A confirmatory factor analysis was run to provide support for the ECBS factor structure. Receiver operating characteristics (ROC) curve analyses were used to test the CBS’s ability to distinguish between 428 clinic-referred children and 245 non-clinic-referred children. Results showed an acceptable fit model for the ECBS, providing further evidence of its construct validity. Optimal cut-scores by child age derived from the ROC curve analyses were provided with corresponding levels of sensitivity, specificity, and positive and negative predictive values. Sensitivity rates for cut scores ranged from 0.76 to 0.83 and specificity rates ranged from 0.88 to 0.95. Acceptable test–retest reliability and good internal consistency also was observed. The CBS quickly identifies young children from low-income, urban, diverse populations that may be at-risk for developing significant behavior disorders and should be considered by health care professionals who work with very young children.  相似文献   

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We examined the prevalence of behavior problems and their relationship to child, parent, and family factors in 76 children with or at risk for developmental delay. Parents reported that 42% of the children had behavior problems. Child Behavior Checklist (CBC) scores revealed that 25% of the sample scored above the borderline cutoff. Although the total, externalizing, and internalizing mean CBC scores did not differ from the normative group (same-aged peers without developmental delay), each of the syndrome subscales was significantly higher in the study group. The Reiss Scales for Children's Dual Diagnosis revealed that, as compared to older children (4 years) with developmental delay, the study sample scored significantly lower on the total score and 8 of the 10 subscales. Increased CBC total scores were significantly related to dependency and management of the child, birth weight, gestational length, paternal illness, maternal depression, perceived personal burden of care, maternal escape-avoidance coping strategy, family disharmony, and financial stress. CBC total scores were significantly negatively correlated with being of a multiple birth, paternal education, maternal employment, two-parent family, family social support, and family income. Multiple regression analyses revealed that an empirically-derived combination of child, parent, and family variables accounted for 31% of the variance in CBC total scores. Our findings suggest that 2-year old children with or at-risk for developmental delay may already be showing signs of increased risk of behavior problems relative to peers without developmental delay. We identified several child, parent, and family variables that may help to pinpoint children at increased riskxs for psychopathology.  相似文献   

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Journal of Behavioral Education - Numerous developmental difficulties differentiate children with autism from typically developing children, including delays in social communication skills. In this...  相似文献   

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