Creating Misspecified Models in Moment Structure Analysis

Psychometrika - To understand how SEM methods perform in practice where models always have misfit, simulation studies often involve incorrect models. To create a wrong model, traditionally one...     

学前儿童英语语音意识、字母知识及口语词汇之间关系的研究

本研究以北京市两所普通幼儿园3~6岁共122名儿童为被试,运用测验法对英语语音意识、字母知识、口语词汇之间的关系进行了考察。结果发现,汉语学前儿童的英语语音意识和字母知识、语音意识和口语词汇、以及字母知识和口语词汇之间都具有显著的相关关系;英语口语词汇对语音意识和字母知识具有显著的预测作用,字母知识和英语语音意识对于英语口语词汇具有显著的预测作用。     

Assessing The Discriminant Validity Of Regression Models And Subjectively Weighted Models Of Judgments

When either regression models or subjectively weighted models are used as aids in making placement decisions, the discriminant validity of these models is of interest. When all predictor information is used in all decisions, models which assign equal weights cannot simultaneously show high levels of predictive accuracy and discriminant validity; in some settings, both regression models and subjectively weighted models may. The discriminant validity of regression models and of subjectively weighted models was investigated in two judgment experiments. Both types of models showed high levels of accuracy and cross-validity in both experiments. Regression models showed discriminant validity in both experiments, while subjectively weighted models failed to show discriminant validity in the second. The homogeneity of cue validities appeared to moderate both the level of discriminant validity and the relationship between similarity of subjective models, across tasks, and discriminant validity.     

万拉法新对抑郁症注意网络功能的影响

目的 研究抑郁症的注意网络状况及抑制神经递质再摄取的药物万拉法新对其的影响,探索神经递质与注意网络的关系。方法 对32例应用万拉法新治疗的抑郁症患者治疗前及疗后6周进行注意网络测定和临床症状评分。结果 与正常组比较,抑郁组的警觉网络和执行控制网络效率差异有显著性,定向网络效率差别无显著性。警觉网络效率与HAMD评分的睡眠障碍因子分呈负相关。治疗后,抑郁组的警觉效率显著增加,其改善与睡眠障碍的好转呈正相关。执行控制网络效率,平均反应时和临床症状评分均较治疗前显著降低,定向网络效率无变化。结论 抑郁症患者存在警觉和执行控制注意网络的异常,万拉法新可选择性地改善警觉和执行控制注意网络的异常而不影响其定向网络     

The Interrelations of Agency,Depression, and Suicidal Ideation Among Older Adults

The high rates of suicide among older men are cause for concern, and have prompted the investigation of factors that might explain these elevated rates. The current research examined whether the gender role construct agency was associated with depression and suicidal ideation among older adults. The results, based on self‐report data from a sample of older Australian men (n = 69) and women (n = 90), indicated that depression mediated the relation between agency and suicidal ideation. In addition, for older men only, agency moderated the depression‐suicidal ideation relation. The results suggest that older adults, and particularly men, with low levels of agency should be the targets for interventions aimed at increasing levels of agency and improving mental health.     

Understanding Linkages Among Mixture Models

The methodological literature on mixture modeling has rapidly expanded in the past 15 years, and mixture models are increasingly applied in practice. Nonetheless, this literature has historically been diffuse, with different notations, motivations, and parameterizations making mixture models appear disconnected. This pedagogical review facilitates an integrative understanding of mixture models. First, 5 prototypic mixture models are presented in a unified format with incremental complexity while highlighting their mutual reliance on familiar probability laws, common assumptions, and shared aspects of interpretation. Second, 2 recent extensions—hybrid mixtures and parallel-process mixtures—are discussed. Both relax a key assumption of classic mixture models but do so in different ways. Similarities in construction and interpretation among hybrid mixtures and among parallel-process mixtures are emphasized. Third, the combination of both extensions is motivated and illustrated by means of an example on oppositional defiant and depressive symptoms. By clarifying how existing mixture models relate and can be combined, this article bridges past and current developments and provides a foundation for understanding new developments.     

A Person Fit Test For Irt Models For Polytomous Items

A person fit test based on the Lagrange multiplier test is presented for three item response theory models for polytomous items: the generalized partial credit model, the sequential model, and the graded response model. The test can also be used in the framework of multidimensional ability parameters. It is shown that the Lagrange multiplier statistic can take both the effects of estimation of the item parameters and the estimation of the person parameters into account. The Lagrange multiplier statistic has an asymptotic χ²-distribution. The Type I error rate and power are investigated using simulation studies. Results show that test statistics that ignore the effects of estimation of the persons’ ability parameters have decreased Type I error rates and power. Incorporating a correction to account for the effects of the estimation of the persons’ ability parameters results in acceptable Type I error rates and power characteristics; incorporating a correction for the estimation of the item parameters has very little additional effect. It is investigated to what extent the three models give comparable results, both in the simulation studies and in an example using data from the NEO Personality Inventory-Revised.     

Graph-theoretic Models of Dispositional Structures

The focus of this article is the view about fundamental natural properties known as dispositional monism. This is a holistic view about nature, according to which all properties are essentially interrelated. The general question to be addressed concerns what kinds of features relational structures of properties should be thought to have. I use Bird's graph-theoretic framework for representing dispositional structures as a starting point, before arguing that it is inadequate in certain important respects. I then propose a more parsimonious graph-theoretic system, which, among other things, overhauls Bird's distinction between stimulus and manifestation relations.     

西方心理学自我同一性概念的解析

我同一性作为西方心理学中一个重要的概念,广泛地应用于发展心理学、人格心理学、社会心理学、咨询心理学、教育心理学和文化心理学。但由于自我同一性概念内涵的丰富与复杂以及研究者理论框架的不同,使自我同一性的概念缺乏明确统一的定义,从而影响了同一性概念的理论功能。本文分析了埃里克森自我同一性概念的奠基、自我同一性概念的实证研究以及自我同一性概念发展的新趋向,透视了西方心理学自我同一性概念不同层面和不同维度上的含义。最后,提出了整合自我同一性概念应关注的范畴以及自我同一性概念的理解。     

A Counterexample To Miller And Farr's Algorithm For The Index Of Redundancy

Miller and Farr's algorithm for the index of redundancy is shown to be incorrect by means of a counterexample. It is also argued that their interpretation of the proportion of the total variance in one multivariate response explained by another multivariate response with respect to a given component of the first response is misleading.     

Perceptions Of Benefits and Losses Associated With The Use and Discontinuance Of Anabolic-Androgenic Steroids Among Male Bodybuilders

Abstract

Research has shown the mesomorphic physique to be the most preferred body type among males. Specifically, the hypermesomorphic physique, which displays extreme muscularity and definition, is the most desired (Tucker, 1983). Mishkind, Rodin, Silberstein, and Streigel-Moore (1987) concluded that multiple reasons exist for this preference, most notably the intimate ties that exist among societal conceptions of masculinity, the male sex role, and the mesomorphic physique. Bodybuilding has been perceived as an avenue by which males attempt to develop the preferred mesomorphic physique, and, at times, anabolic-androgenic steroids (AAS) have been ingested as a means for further development. This study entailed in-depth interviews with 10 male bodybuilders, all of whom had taken, or were currently taking, AAS. This article presents the findings of the interviews concerning the perceived benefits of and psychological dependency on AAS. The data, particularly responses concerning psychological dependency, are noted within Mishkind et al.'s framework as a mechanism to avoid loss of muscle strength, muscle mass, and masculinity.