A semiparametric approach for item response function estimation to detect item misfit

When scaling data using item response theory, valid statements based on the measurement model are only permissible if the model fits the data. Most item fit statistics used to assess the fit between observed item responses and the item responses predicted by the measurement model show significant weaknesses, such as the dependence of fit statistics on sample size and number of items. In order to assess the size of misfit and to thus use the fit statistic as an effect size, dependencies on properties of the data set are undesirable. The present study describes a new approach and empirically tests it for consistency. We developed an estimator of the distance between the predicted item response functions (IRFs) and the true IRFs by semiparametric adaptation of IRFs. For the semiparametric adaptation, the approach of extended basis functions due to Ramsay and Silverman (2005) is used. The IRF is defined as the sum of a linear term and a more flexible term constructed via basis function expansions. The group lasso method is applied as a regularization of the flexible term, and determines whether all parameters of the basis functions are fixed at zero or freely estimated. Thus, the method serves as a selection criterion for items that should be adjusted semiparametrically. The distance between the predicted and semiparametrically adjusted IRF of misfitting items can then be determined by describing the fitting items by the parametric form of the IRF and the misfitting items by the semiparametric approach. In a simulation study, we demonstrated that the proposed method delivers satisfactory results in large samples (i.e., N ≥ 1,000).     

资质过剩感对个体绩效的作用效果及机制：基于情绪-认知加工系统与文化情境的元分析

近年来, 资质过剩作为一种特殊的个人-环境不匹配现象, 引发了较多学者的关注, 但相关研究结论尚有争议。对包含383项独立研究、945个效应值及575061个研究样本的321篇文献开展元分析：(1)直接效应检验表明, 资质过剩感与消极情绪(愤怒、无聊)显著正相关, 与积极自我概念(自尊、自我效能感)的相关性不显著; 在个体绩效方面, 资质过剩感与消极角色外行为(反生产行为、离职)显著正相关, 与积极角色外行为(创新、组织公民行为等)和任务绩效的相关性不显著。(2) 结构方程模型元分析表明, 资质过剩感能够通过增强消极情绪, 进而增加消极角色外行为、减少积极角色外行为和任务绩效; 能够通过增强积极自我概念, 进而增加积极角色外行为和任务绩效、减少消极角色外行为; (3)集体主义文化倾向在资质过剩感通过情绪-认知加工系统影响个体绩效的过程中发挥调节作用, 在高集体主义文化情境中, 资质过剩感对消极情绪的负向影响较弱, 且能对积极自我概念产生正向影响; 在低集体主义文化情境中, 资质过剩感对消极情绪的负向影响较强, 且能对积极自我概念产生负向影响。(4)资质过剩感与个人-工作匹配相关性较强, 与个人-组织匹配相关性较弱; 与二者相比, 资质过剩感对压力感、离职的预测效果最强。研究结果有助于理解资质过剩感对个体绩效的复杂作用机制和边界条件, 并为组织如何管理资质过剩员工提供参考。     

Are conservatives happier than liberals? Not always and not everywhere

Prior research has shown that conservatives report higher levels of subjective well-being than liberals (happiness gap). We investigate to what extent this phenomenon exists in different time periods within the United States (Study 1, N = 40,000) and in different countries (Study 2, N = 230,000). Consistent with our hypotheses grounded in the “shared reality” and person-culture fit literature, conservatives were happier and more satisfied with their lives than liberals to the extent that the conservative political ideology prevailed in their socio-cultural context, be it a specific time period in the U.S. or a specific country. These results show that the happiness gap between conservatives and liberals is less universal than previously assumed.     

L’appariement personne-organisation au service de la sélection du personnel

In order to address the market and workforce pressures and obligations, many organizations are now turning to person-organization fit (P-O fit) based on value congruence for their recruitment and selection activities. However, the various ways to ensure P-O fit are not very well known. This article presents concrete practices to measure and take into account P-O fit in selection, one of which is testing.     

个人－环境(组织)匹配视角的员工幸福感

个人-环境匹配与员工幸福感的相关研究集中在整体工作满意度、情感幸福感、工作层面满意度、心理幸福感四个方面; 当前的研究不仅关注个人-环境的匹配与员工幸福感的相关, 还重视个人-环境的不匹配及其方向性对员工幸福感的影响; 并通过引入调节变量构建整合的员工幸福感影响因素模型。今后的研究要对相关概念进行清晰界定, 对员工幸福感的研究内容需要超越工作满意度, 要关注个人-环境匹配的不同层面与幸福感的关系, 在方法上要结合组织情境开展动态研究。     

员工社会资本跨层次契合的动态演化过程及双向作用机制

员工社会资本向企业社会资本的转化是拓展员工价值、获取外部资源的有效途径, 为阐释这一多层次主体互动现象, 提出社会资本跨层次契合的构念, 运用跨层次追踪研究设计, 对其动态演化过程和双向作用机制进行剖析。首先, 探索员工社会资本跨层次契合的维度结构, 并基于此开发跨层次契合量表; 其次, 对社会资本跨层次契合进行过程解构, 探讨员工心理与行为、企业能力与情境在动态演化过程中的作用; 再次, 构建自上而下和自下而上的嵌入与涌现机制理论模型, 将影响员工社会资本跨层次契合的多层次因素整合到同一个理论框架, 并以纵向追踪数据进行实证检验, 厘清作用路径和作用边界。在此基础上, 运用追踪跨案例研究方法, 探讨社会资本跨层次契合的战略选择, 研究结论能为激发员工角色外行为, 有效利用社会资本的管理实践提供启示。     

不同条件下拟合指数的表现及临界值的选择

在本模拟研究中设计了6种样本容量,6种因子载荷,和4种评分等级,并考察了正态和非正态分布两种情况。采用的错误模型为参数误置（真模型中每个因子各由5个题目来测量,错误模型中则是第一个因子由6个题测量,另两个因子各由4个和5个题来测量,即有一个因子载荷被误置）模型。结果发现（1）样本量、载荷量、评分等级数和分布形态都对GOF的取值确有影响。其中分布形态的影响最大。NNFI、IFI在不同条件下的平均值是最稳定的,其次是CFI、RMSEA和SRMR。它们都算是值得推荐的GOF,尤其是NNFI和IFI。（2）在正态分布中,当样本量≥1000时,根据NNFI、IFI、CFI、RMSEA、SRMR对模型是否拟合做出判断时有很低的两类错误率,在样本量<1000时则不理想。在偏态条件下无论选择哪个GOF两类错误率都很高。（3）采用2指数策略在很多情况下也不能显著降低两类错误率。（4）由于在数据分布非正态,或正态但样本量<1000时是难判断模型是否拟合的。因此我们提出了2界值策略。即为每个GOF确定上下两个界值。低于下界值时可判断模型是不正确的,而高于上界值时则可判断模型是正确的。GOF取值处于上下界值之间时难以判断模型是否拟合,只能说越高拟合的可能性越大。这时就要通过跨样本验证和增加样本量来确定模型是否正确     

Sample size and bentler and Bonett's nonnormed fit index

Bentler and Bonett's nonnormed fit index is a widely used measure of goodness of fit for the analysis of covariance structures. This note shows that contrary to what has been claimed the nonnormed fit index is dependent on sample size. Specifically for a constant value of a fitting function, the nonnormed index is inversely related to sample size. A simple alternative fit measure is proposed that removes this dependency. In addition, it is shown that this new measure as well as the old nonnormed fit index can be applied to any fitting function that measures the deviation of the observed covariance matrix from the covariance matrix implied by the parameter estimates for a model.