Exact person fit indexes for the rasch model for arbitrary alternatives

A new algorithm for obtaining exact person fit indexes for the Rasch model is introduced which realizes most powerful tests for a very general family of alternative hypotheses, including tests concerning DIF as well as model-deviating item correlations. The method is also used as a goodness-of-fit test for whole data sets where the item parameters are assumed to be known. For tests with 30 items at most, exact values are obtained, for longer tests a Monte Carlo-algorithm is proposed. Simulated examples and an empirical investigation demonstrate test power and applicability to item elimination.The author wishes to thank Elisabeth Ponocny-Seliger and the reviewers for many helpful comments. All exact goodness-of-fit tests proposed in this article are implemented in the menu-driven program T-Rasch 1.0 by Ponocny and Ponocny-Seliger (1999) which can be obtained from ProGAMMA (WWW: http://www.gamma.rug.nl) and also performs nonparametric tests.     

在内科临床中落实生物心理社会医学模式

社会心理因素与内科疾病的发生、发展和治疗效果关系密切,临床工作中忽视社会心理因素的作用可能导致严重后果。内科医生应积极拓展自身的知识技能,继而把对社会心理因素的重视落在实处,体现在病历中。完整的病史采集又需要加强医患沟通,如此才能真正发现和解决患者的社会心理问题。     

整体护理与新医学模式

整体护理作为当代护理的基本工作模式和护理学发展的基本趋势,是与生物心理社会医学模式的确立直接相联系的。在临床护理中,落实新医学模式,是推行整体护理所必需的。在整体护理中落实新医学模式应从转变护理人员观念、整体护理规范化、改变护理队伍的知识和技能结构、提供护士职业道德水平等方面做起。     

在新医学模式指导下预防碘缺乏病

碘缺乏病严重危害人类健康,是最大的、可预防的智力损伤因素。通过“社会动员”,推动防治碘缺乏病（ＩＤＤ）“轮子”运转,使我国消除ＩＤＤ事业有了巨大进步。目前存在的问题可能会影响到该事业的可持续发展。对此,提出一些建议。     

刻板印象从内容模型到系统模型的发展与应用

21世纪以来,在刻板印象研究中最受瞩目的当属刻板印象内容模型（Stereotype Content Model, SCM）的提出。它通过热情和能力二个维度区分对不同群体的刻板印象。新近的系统模型则将SCM与群际情绪、行为反应相结合,并凸现了道德维度,开创性地提出了群际情绪-刻板印象-行为趋向系统模型（Behaviors from Intergroup Affect and Stereotypes Map, BIAS Map）。这一系统模型是对刻板印象内容模型的有意义延伸,同时二者的有机结合进一步促进了刻板印象内群体与群体间研究的整合性,较之又增添了认知-情绪-行为与刻板印象预测之间的联结。     

Utilizing response times in cognitive diagnostic computerized adaptive testing under the higher-order deterministic input,noisy ‘and’ gate model

Methods of cognitive diagnostic computerized adaptive testing (CD-CAT) under higher-order cognitive diagnosis models have been developed to simultaneously provide estimates of the attribute mastery statuses of examinees for formative assessment and estimates of a latent continuous trait for overall summative evaluation. In a typical CD-CAT environment, examinees are often subject to a time limit, and the examinees’ response times (RTs) for specific test items can be routinely recorded by custom-made programs. Because examinees are individually administered tailored sets of test items from the item pool, they may experience different levels of speededness during testing and different levels of risk of running out of time. In this study, RTs were considered during the item-selection procedure to control the test speededness and the RTs were treated as useful information for improving latent trait estimation in CD-CAT under the higher-order deterministic input, noisy ‘and’ gate (DINA) model. A modified posterior-weighted Kullback–Leibler (PWKL) method that maximizes the item information per time unit and a shadow-test method that assembles a provisional test subject to a specified time constraint were developed. Two simulation studies were conducted to assess the effects of the proposed methods on the quality of CD-CAT for fixed- and variable-length exams. The results show that, compared with the traditional PWKL method, the proposed methods preserve a lower risk of running out of time while ensuring satisfactory attribute estimation and providing more accurate estimates of the latent trait and speed parameters. Finally, several suggestions for future research are proposed.     

A Social Network Analysis of Friendship and Spiritual Support in a Religious Congregation

Religious congregations are social settings where people gather together in community to pursue the sacred (Pargament, 2008). Such settings are important to understand as they provide a context for individuals to develop relationships, share ideas and resources, and connect individuals to larger society (Todd, 2017a). Yet, research to date has not deeply examined the inherently relational nature of religious congregations. Thus, in this study, we used social settings theory (Seidman, 2012; Tseng & Seidman, 2007) to develop and test hypotheses about relationships within one Christian religious congregation. In particular, we used social network analysis to test hypotheses about relational activity, popularity, and homophily for friendship and spiritual support types of relational links. Our findings demonstrate how relational patterns may be linked to participation in congregational activities, occupying a leadership role, a sense of community and spiritual satisfaction, stratification, socialization, and spiritual support. Overall, this advances theory and research on the relational aspects of religious congregations, and more broadly to the literature on social settings. Limitations, directions for future research, and implications for theory and religious congregations also are discussed.     

Classifying the sense of community trajectories among South Korea adolescents

We examined the longitudinal patterns of the sense of community among the middle and the late adolescents. For this purpose, we used the latent class growth analysis to explore the trajectories of the sense of community, and multinomial logistic regression was conducted to identify the significant predictors. The data for this study were taken from the Korean Children and Youth Panel Survey from 2010 to 2016. The major findings are as follows. First, three latent classes were identified: low‐, middle‐, and high‐level increasing group. Gender, mobile phone addiction, parental affection, household income, peer and teacher relationship, and school activities were significantly associated with the latent classes. On the basis of the results, implications with suggestions for future research were discussed.     

Partner–objectification in romantic relationships: A dyadic approach

The present study investigated the relationship between the objectification of one's romantic partner (partner–objectification) and relationship quality using 221 heterosexual couples. Controlling for relevant covariates, actor–partner interdependence models revealed no partner effects but multiple actor effects. First, men who objectified their partners more had lower levels of relationship commitment and relationship satisfaction, and perceived higher quality alternatives to the relationship. Second, women who objectified their partners more had lower levels of relationship satisfaction themselves. Third, relationship duration marginally moderated the association between partner–objectification and relationship commitment, with partner–objectification negatively linked to one's own relationship commitment in relationships of shorter durations, but not when relationship durations were longer. Implications for an investment model and romantic relationship objectification are discussed.     

Loneliness,eating, and body mass index in parent–adolescent dyads from the Family Life,Activity, Sun,Health, and Eating study

Loneliness is a salient risk factor for obesity, emotional eating, and poor diet. Because adolescents and parents are embedded within a family unit, their experiences of loneliness may be associated with both their own and one another's behaviors. To examine the extent to which parent and child loneliness predict body mass index (BMI) and eating in parents and adolescents, an actor–partner interdependence model of loneliness, eating, and BMI in adolescent–parent dyads was analyzed. There were actor effects among adolescents such that greater loneliness was positively associated with emotional eating and BMI‐z, and there was an actor effect among parents such that higher loneliness was positively related to emotional eating. There was a partner effect among adolescents such that greater parental loneliness was positively associated with adolescent emotional eating, and there was a partner effect among parents such that higher adolescent loneliness was positively associated with parental emotional eating. There were several actor–partner effects for loneliness and junk food in dyads with boys. Findings highlight the importance of dyadic models of loneliness in adolescent–parent dyads.