多阶段混合增长模型的方法及研究现状

多阶段混合增长模型(PGMM)可对发展过程中的阶段性及群体异质性特征进行分析,在能力发展、行为发展及干预、临床心理等研究领域应用广泛。PGMM可在结构方程模型和随机系数模型框架下定义,通常使用基于EM算法的极大似然估计和基于马尔科夫链蒙特卡洛模拟的贝叶斯推断两种方法进行参数估计。样本量、测量时间点数、潜在类别距离等因素对模型及参数估计有显著影响。未来应加强PGMM与其它增长模型的比较研究;在相同或不同的模型框架下研究数据特征、类别属性等对参数估计方法的影响。     

Growth,Experience and Nature in Dewey's Philosophy and Chinese Philosophy

Growth is an important concept in Dewey's philosophy,and,indeed,its ultimate focus.It is not,however,an easy task to posit growth as an ethical ideal,for here Dewey immediately faces a metaphysical dilemma:whether to offer us an objective standard of growth,which becomes a type of absolutism,or to inevitably fall into relativism.This paper explores how Dewey avoids this dilemma with his concept of experience,which is interrogated through the relationship between human beings and nature.Still,human growth in nature involves the cultivation of virtuosities (de德) in accordance with the rhythm of nature,and requires a completely different way of life other than our technological one.For this reason,I use Chinese philosophy,specifically ideas from the Yijing,to show how growth can be illustrated through the interaction between humans and the natural world.     

(Re)evaluating the Implications of the Autoregressive Latent Trajectory Model Through Likelihood Ratio Tests of Its Initial Conditions

The autoregressive latent trajectory (ALT) model synthesizes the autoregressive model and the latent growth curve model. The ALT model is flexible enough to produce a variety of discrepant model-implied change trajectories. While some researchers consider this a virtue, others have cautioned that this may confound interpretations of the model's parameters. In this article, we show that some—but not all—of these interpretational difficulties may be clarified mathematically and tested explicitly via likelihood ratio tests (LRTs) imposed on the initial conditions of the model. We show analytically the nested relations among three variants of the ALT model and the constraints needed to establish equivalences. A Monte Carlo simulation study indicated that LRTs, particularly when used in combination with information criterion measures, can allow researchers to test targeted hypotheses about the functional forms of the change process under study. We further demonstrate when and how such tests may justifiably be used to facilitate our understanding of the underlying process of change using a subsample (N = 3,995) of longitudinal family income data from the National Longitudinal Survey of Youth.     

Are economic conditions related to nonnormative life satisfaction development? Evaluating the relative impact of economic conditions,personality, and subjective health

This study examined the relative contribution of psychological and socioeconomic resources to explaining qualitative individual differences in life satisfaction development. We used growth mixture modeling and a cohort‐sequential design to investigate life satisfaction development from ages 25 to 65, in a nationally representative panel (the Socioeconomic Panel). Eighty‐three percent of the participants experienced stability in life satisfaction. In a subgroup of individuals (10%), life satisfaction declined. This subgroup lived under less favorable economic conditions and reported downward moves on an index of socioeconomic status. In another subgroup (7%), life satisfaction was low at age 25 and increased up to age 65. This group was also socioeconomically disadvantaged but scored higher on adaptive personality traits and experienced upward social mobility. Generally, personality traits explained level differences in life satisfaction better than economic conditions. However, economic conditions explained nonnormative life satisfaction development better than generalized control beliefs and the Big Five traits.     

CAREGIVER–CHILD INTERACTION,CAREGIVER TRANSITIONS,AND GROUP SIZE AS MEDIATORS BETWEEN INTERVENTION CONDITION AND ATTACHMENT AND PHYSICAL GROWTH OUTCOMES IN INSTITUTIONALIZED CHILDREN

This report describes a secondary analysis of data from a comprehensive intervention project which included training and structural changes in three Baby Homes in St. Petersburg, Russian Federation. Multiple mediator models were tested according to the R.M. Baron and D.A. Kenny ( 1986 ) causal‐steps approach to examine whether caregiver–child interaction quality, number of caregiver transitions, and group size mediated the effects of the intervention on children's attachment behaviors and physical growth. The study utilized a subsample of 163 children from the original Russian Baby Home project, who were between 11 and 19 months at the time of assessment. Results from comparisons of the training and structural changes versus no intervention conditions are presented. Caregiver–child interaction quality and number of caregiver transitions fully mediated the association between intervention condition and attachment behavior. No other mediation was found. Results suggest that the quality of interaction between caregivers and children in institutional care is of primary importance to children's development, but relationship context may play a less direct mediational role, supporting caregiver–child interactions.     

Understanding intergroup relations through the lens of implicit theories (mindsets) of malleability

This review argues that implicit theories of malleability are essential constructs for the study of intergroup dynamics. As one of people's core meaning‐making tools, mindsets about malleability shed light on the mechanisms behind perceivers' tendency to stereotype and feel prejudiced towards targets, as well as on the mechanisms underlying targets' ability to shield against, and potentially confront, bias. In addition to illuminating cross‐group interaction dynamics between individuals, mindsets contribute to explaining the harmful processes at play in real‐world protracted conflicts and suggest interventions that may help lay the ground for peace processes. This review also aims to highlight areas of research that remain open for further investigation or that have been overlooked to date. We argue that research integrating mindsets and intergroup relations will advance our understanding of intergroup dynamics, as well as possibly offering insights on how to improve them, and that this approach will also further the study of lay theories of malleability.     

Students’ Perceptions of School Climate During the Middle School Years: Associations with Trajectories of Psychological and Behavioral Adjustment

A cross-domain latent growth curve model was used to examine the trajectories of change in student perceptions of four critical dimensions of school climate (i.e., teacher support, peer support, student autonomy in the classroom, and clarity and consistency in school rules and regulations) among 1,451 early adolescents from the beginning of sixth through the end of eighth grade; and the effects of such trajectories on the rate of change in psychological and behavioral adjustment. Findings indicated that all of the dimensions of perceived school climate declined over the 3 years of middle school. Furthermore, declines in each of the dimensions of perceived school climate were associated with declines over time in psychological and behavioral adjustment. Moreover, the direction of effects between each dimension of perceived school climate and psychological or behavioral adjustment were often unidirectional rather than bi-directional, underscoring the role of perceived school climate in the psychological and behavioral health of early adolescents. Gender and socioeconomic class differences in these patterns are noted.     

如何描述发展趋势的差异：潜变量混合增长模型

在追踪研究中,研究者不仅关心某一特质随时间的发展趋势,而且关注个体之间发展趋势的差异及其存在差异的原因。在总体发展同质的情形下,多层线性模型和潜变量增长曲线模型为解决这一问题提供了切实有效的方法。但是如果所研究的总体本身不同质,就需要一种能够描述总体中不同质子总体的不同发展特点的方法。该文简要介绍了一种能够描述不同群体不同发展趋势特征的统计模型——潜变量混合增长模型,并通过一个实际例子介绍了这一方法的应用过程,同时说明了潜变量混合增长模型与多层线性模型和潜变量增长曲线模型之间的关系     

学校资源对青少年早期幸福感发展的影响：意向性自我调节的纵向中介作用

通过对1214名初中生历时3年的3次追踪测量, 考察了青少年早期的学校资源、意向性自我调节及幸福感的发展趋势, 并对意向性自我调节在学校资源与幸福感发展间的纵向中介作用机制进行检验。结果发现, 在青少年早期, 学校资源具有相对的稳定性, 意向性自我调节及幸福感均呈线性增长; 学校资源对幸福感发展的作用机制表现为：一方面, 学校资源通过意向性自我调节的初始水平分别对幸福感的初始水平和发展速度起间接作用, 另一方面, 学校资源通过意向性自我调节的发展速度对幸福感的发展速度起间接作用。结论：青少年早期, 学生的学校资源水平保持稳定, 意向性自我调节和幸福感的发展均呈线性递增趋势; 学校资源能够通过意向性自我调节的初始水平和发展速度对幸福感的发展起间接作用。     

Wandering eyes: Eye movements during mind wandering in video lectures

Video lectures are increasingly prevalent, but they present challenges to learners. Students' minds often wander, yet we know little about how mind wandering affects attention during video lectures. This paper presents two studies that examined eye movement patterns of mind wandering during video lectures. In the studies, mind wandering reports were collected by either self-caught reports or thought probes. Results were similar across the studies: mind wandering was associated with an increased allocation of fixations to the instructor's image. For fixations on the slides, the average duration increased but the dispersion decreased. Moreover, preliminary evidence suggested that fixation duration and dispersion can diminish soon after self-caught reports of mind wandering. Overall, these findings help advance our understanding of how learners' attention is affected during mind wandering and may facilitate efforts in objectively identifying mind wandering. Future research is needed to determine if these findings can extend to other instructional formats.