Evidence from two studies conducted with kindergarten samples (N = 200, M age = 5.58 years; N = 199, M age = 5.47 years) supported a series of interrelated hypotheses derived from a child x environment model of early school adjustment. The findings obtained were consistent with the following inferences: (1) Entry factors, such as children's cognitive maturity and family backgrounds, directly as well as indirectly influence children's behavior, participation, and achievement in kindergarten; (2) as children enter school, their initial behavioral orientations influence the types of relationships they form with peers and teachers; (3) stressful aspects of children's peer and teacher relationships in the school environment adversely impact classroom participation and achievement; and (4) classroom participation is an important prerequisite for achievement during kindergarten. Collectively, these findings illustrate the need to revise prevailing theories of school adjustment, and the research agendas that evolve from these perspectives, so as to incorporate interpersonal risk factors that operate within the school environment.

Longitudinal data from a study of kindergarten through 5th graders were used to estimate a structural model in which chronic peer exclusion and chronic peer abuse were hypothesized to mediate the link between children's early peer rejection, later classroom engagement, and achievement. Peer exclusion and abuse were expected to predict changes in 2 forms of school engagement (classroom participation and school avoidance), and changes in both forms of engagement were expected to predict changes in achievement. The model fit the data well and lent support to the premise that distinct forms of peer maltreatment and classroom engagement mediate the link between early peer rejection and changes in children's achievement. Early peer rejection was associated with declining classroom participation and increasing school avoidance, but different forms of chronic peer maltreatment mediated these relations. Whereas chronic peer exclusion principally mediated the link between peer rejection and classroom participation, chronic peer abuse primarily mediated the link between rejection and school avoidance. Children's reduced classroom participation, more than gains in school avoidance, anteceded decrements in children's achievement.

A short-term longitudinal design (N = 399) was used to examine peer relations processes that may mediate the relation between peer rejection and children's emotional and academic adjustment during kindergarten. These proposed mediating processes extend the current literature by explicating behavioral pathways via which the attitudinal construct of peer rejection may affect adjustment outcomes. Structural equatiton modeling results supported the hypothesis that negative peer treatment (e.g., victimization, refusal of peer group entry bids, and exclusion from peer activities) and classroom participation partially mediate the relationship between rejection and adjustment outcomes. Rejected children were more likely to experience negative peer treatment, more likely to show decreases in classroom participation, and more likely to report loneliness, to express a desire to avoid school, and to perform less well on achievement measures.

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This study examined the factorial invariance and construct validity equival ence of a selfreport of victimization and exclusion (SVEX) for Latino and European American early adolescent participants (fifth and sixth grades; mean age 11.3). The instrument included an expanded set of relational victimization items that more thoroughly tapped exclusion behaviors relevant to dev elopmental and crosscultural use. Confirmatory factor analyses techniques demonstrated acceptable (partial) factorial invariance across ethnic groups, fifth and sixth graders, and across gender. Linkages between the SVEX scores, peer nominations, internalizing indices, and three demographic variables also supported construct validity equivalence for the SVEX. Findings supported

Background: In China, there are approximately 70 million children, nearly 25% of the child population, who are left behind in the care of other family members when their parents migrate to urban areas, for increased economic opportunities. This paper presents a systematic review and a meta-analysis of studies that have examined the phenomenon of depression among these left-behind children (LBC). Methods: Six hundred three papers published between 2000 and 2017 were retrieved from five databases (China National Knowledge Infrastructure, Wanfang, Weipu, PubMed, and Web of Science).Results: Twenty-one studies (18 in Chinese and 3 in English) met the criteria for inclusion in this meta-analysis. The pooled estimate of depression among LBC was 26.4%. A significant heterogeneity has been found in reported findings, and this heterogeneity was associated with three types of study characteristics, including using an unclear definition of LBC and using invalidated depression instruments, and the geographic location.Conclusions: The risk of mental health problems among this large number of LBC suggests the need to quantify the extent and distribution of their mental health state.Implications for methodological improvements for future research have been discussed.