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221.
Shiyu Wang 《The British journal of mathematical and statistical psychology》2018,71(2):300-333
The maximum likelihood classification rule is a standard method to classify examinee attribute profiles in cognitive diagnosis models (CDMs). Its asymptotic behaviour is well understood when the model is assumed to be correct, but has not been explored in the case of misspecified latent class models. This paper investigates the asymptotic behaviour of a two-stage maximum likelihood classifier under a misspecified CDM. The analysis is conducted in a general restricted latent class model framework addressing all types of CDMs. Sufficient conditions are proposed under which a consistent classification can be obtained by using a misspecified model. Discussions are also provided on the inconsistency of classification under certain model misspecification scenarios. Simulation studies and a real data application are conducted to illustrate these results. Our findings can provide some guidelines as to when a misspecified simple model or a general model can be used to provide a good classification result. 相似文献
222.
Kenneth T. Wang G. E. Kawika Allen Hannah I. Stokes Han Na Suh 《Journal of religion and health》2018,57(6):2207-2223
In this study, the Perceived Perfectionism from God Scale (PPGS) was developed with Latter-day Saints (Mormons) across two samples. Sample 1 (N = 421) was used for EFA to select items for the Perceived Standards from God (5 items) and the Perceived Discrepancy from God (5 items) subscales. Sample 2 (N = 420) was used for CFA and cross-validated the 2-factor oblique model as well as a bifactor model. Perceived Standards from God scores had Cronbach alphas ranging from .73 to .78, and Perceived Discrepancy from God scores had Cronbach alphas ranging from .82 to .84. Standards from God scores were positively correlated with positive affect, whereas Discrepancy from God scores was positively correlated with negative affect, shame and guilt. Moreover, these two PPGS subscale scores added significant incremental variances in predicting associated variables over and above corresponding personal perfectionism scores. 相似文献
223.
Are Decisions Made by Group Representatives More Risk Averse? The Effect of Sense of Responsibility
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We tested the hypothesis that a sense of responsibility drives group representatives' decisions to be more risk averse compared with decisions made by individuals. The hypothesis was supported when the monetary considerations (i.e., payoff inequality and the magnitude effect) were controlled for in the potential gain domain as well as in the potential loss domain. Evidence showed that this is because the group representatives were concerned about how they would view themselves (e.g., guilt and self‐blame) and also how they would be viewed by others (i.e., to avoid being blamed and looked down upon by others). This study provided new insights into understanding group representatives' decision making under risk. Copyright © 2017 John Wiley & Sons, Ltd. 相似文献
224.
Shinmin Wang 《Memory (Hove, England)》2018,26(4):514-523
Recent research has suggested that the creation of temporary bound representations of information from different sources within working memory uniquely relates to word recognition abilities in school-age children. However, it is unclear to what extent this link is attributable specifically to the binding ability for cross-modal information. This study examined the performance of Grade 3 (8–9 years old) children on binding tasks requiring either temporary association formation of two visual items (i.e., within-modal binding) or pairs of visually presented abstract shapes and auditorily presented nonwords (i.e., cross-modal binding). Children’s word recognition skills were related to performance on the cross-modal binding task but not on the within-modal binding task. Further regression models showed that cross-modal binding memory was a significant predictor of word recognition when memory for its constituent elements, general abilities, and crucially, within-modal binding memory were taken into account. These findings may suggest a specific link between the ability to bind information across modalities within working memory and word recognition skills. 相似文献
225.
Measurement invariance is a fundamental assumption in item response theory models, where the relationship between a latent construct (ability) and observed item responses is of interest. Violation of this assumption would render the scale misinterpreted or cause systematic bias against certain groups of persons. While a number of methods have been proposed to detect measurement invariance violations, they typically require advance definition of problematic item parameters and respondent grouping information. However, these pieces of information are typically unknown in practice. As an alternative, this paper focuses on a family of recently proposed tests based on stochastic processes of casewise derivatives of the likelihood function (i.e., scores). These score-based tests only require estimation of the null model (when measurement invariance is assumed to hold), and they have been previously applied in factor-analytic, continuous data contexts as well as in models of the Rasch family. In this paper, we aim to extend these tests to two-parameter item response models, with strong emphasis on pairwise maximum likelihood. The tests’ theoretical background and implementation are detailed, and the tests’ abilities to identify problematic item parameters are studied via simulation. An empirical example illustrating the tests’ use in practice is also provided. 相似文献
226.
We discuss measuring and detecting influential observations and outliers in the context of exponential family random graph (ERG) models for social networks. We focus on the level of the nodes of the network and consider those nodes whose removal would result in changes to the model as extreme or “central” with respect to the structural features that “matter”. We construe removal in terms of two case-deletion strategies: the tie-variables of an actor are assumed to be unobserved, or the node is removed resulting in the induced subgraph. We define the difference in inferred model resulting from case deletion from the perspective of information theory and difference in estimates, in both the natural and mean-value parameterisation, representing varying degrees of approximation. We arrive at several measures of influence and propose the use of two that do not require refitting of the model and lend themselves to routine application in the ERGM fitting procedure. MCMC p values are obtained for testing how extreme each node is with respect to the network structure. The influence measures are applied to two well-known data sets to illustrate the information they provide. From a network perspective, the proposed statistics offer an indication of which actors are most distinctive in the network structure, in terms of not abiding by the structural norms present across other actors. 相似文献
227.
228.
The Individual Career Counseling Needs and Experiences of Female Survivors of Partner Violence
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Krista M. Chronister Paula Luginbuhl Christine Ngo Rosemarie Downey‐McCarthy Jenny Wang Leah Barr Christina Aranda Eliza Harley 《Journal of Employment Counseling》2018,55(2):84-94
The impact of partner violence on women's employment and career development is profound. Career counselors may contribute substantially to these women's rehabilitation. This study examined employment and career counseling needs, barriers experienced, and counseling satisfaction of female survivors of partner violence (N = 71). The women participated in community‐ and research‐based individual career counseling services designed to promote their short‐ and long‐term career development. The authors conducted correlational, t‐test, and logistic regression analyses and found that barriers differed by race/ethnicity, age, number of children, and career service needs. Results provide important information about survivors' career counseling service access and needs. 相似文献
229.
基于社会控制理论,运用问卷调查法,通过分析308组配对数据,探讨工具主义伦理气氛对员工沉默行为的影响机制。结果发现:工具主义伦理气氛对沉默行为有正向作用;工具主义伦理气氛对犬儒主义有正向作用;犬儒主义在工具主义伦理气氛与沉默行为之间起部分中介作用;传统性调节了犬儒主义与沉默行为的关系,也调节了犬儒主义在工具主义伦理气氛与沉默行为关系的中介作用。 相似文献
230.
以道德推脱理论为基础,运用问卷调查法,通过对776名员工的调查,探讨了德行领导对员工不道德行为和利他行为的影响及道德推脱在这一影响中的中介作用。研究发现:(1)德行领导会抑制员工不道德行为的产生、促进员工利他行为的出现;(2)道德推脱会促进员工不道德行为的产生、抑制员工利他行为的出现;(3)德行领导通过道德推脱的完全中介作用负向影响员工的不道德行为,通过道德推脱的部分中介作用正向影响员工的利他行为。 相似文献