中介效应的检验方法和效果量测量:回顾与展望

通过中介效应检验方法之间的比较和效果量指标之间的比较,建议放弃将总效应c显著作为中介效应检验的前提条件,放弃基于直接效应c'显著性的完全和部分中介的提法,推荐使用偏差校正的百分位Bootstrap法直接对中介效应ab进行检验,使用κ²、R_med²等中介效果量指标并报告效果量的置信区间。作为示例,用R软件的MBESS软件包对某消防员饮食健康调查进行了中介效应检验和效果量测量。随后展望了中介效应检验方法和效果量测量的拓展方向。     

类别变量的中介效应分析

在心理学和其他社科研究领域,研究者能熟练地进行连续变量的中介效应分析,但面对自变量、中介变量或(和)因变量为类别变量的中介效应分析,研究者往往束手无策。在阐述类别自变量中介分析方法的基础上,我们建议使用整体和相对中介相结合的类别自变量中介分析方法,并给出了分析流程。以二分因变量为例,讨论了中介变量或(和)因变量为类别变量的中介分析方法的发展过程(即尺度统一的过程),建议通过检验Za×Zb的显著性来判断中介效应的显著性。用二个实际例子演示如何进行类别变量的中介效应分析。最后展望了类别变量的中介效应分析研究的拓展方向。     

Nourishing or suppressing? The contradictory influences of perception of organizational politics on organizational citizenship behaviour

Drawing on both social exchange theory and impression management theory, this study sought to explain how perception of organizational politics (POP) influences organizational citizenship behaviour (OCB) through two contrary psychological processes. We proposed that through the mediation of job satisfaction, POP has an inhibiting effect on OCB; through the mediation of careerism, POP has a nourishing effect on OCB. Data were obtained from 393 police officers and their colleagues from a city police department in northern Taiwan. Results from structural equation modelling (SEM) revealed that the relationship between POP and OCB was negatively mediated by job satisfaction and positively mediated by careerism. Such antithetical psychological processes imply that employees may experience psychological dilemmas over the performance of OCB when they perceive their organization as political. Implications for theory and future research are discussed.     

有调节的中介模型检验方法：竞争还是替补?

在心理和其他社科研究领域, 经常遇到中介和调节变量。模型的变量多于3个时, 可能同时包含中介和调节变量, 一种常见的模型是有调节的中介模型。本文检视文献上各种检验有调节的中介模型的方法, 理清方法之间是竞争关系(分清优劣)还是替补关系(分清先后), 在此基础上总结出检验有调节的中介模型的步骤, 并用一个实例进行演示。文中也讨论了有调节的中介模型与有中介的调节模型的联系与区别。     

Cross-Sectional Analysis of Longitudinal Mediation Processes

Statistical mediation analysis can help to identify and explain the mechanisms behind psychological processes. Examining a set of variables for mediation effects is a ubiquitous process in the social sciences literature; however, despite evidence suggesting that cross-sectional data can misrepresent the mediation of longitudinal processes, cross-sectional analyses continue to be used in this manner. Alternative longitudinal mediation models, including those rooted in a structural equation modeling framework (cross-lagged panel, latent growth curve, and latent difference score models) are currently available and may provide a better representation of mediation processes for longitudinal data. The purpose of this paper is twofold: first, we provide a comparison of cross-sectional and longitudinal mediation models; second, we advocate using models to evaluate mediation effects that capture the temporal sequence of the process under study. Two separate empirical examples are presented to illustrate differences in the conclusions drawn from cross-sectional and longitudinal mediation analyses. Findings from these examples yielded substantial differences in interpretations between the cross-sectional and longitudinal mediation models considered here. Based on these observations, researchers should use caution when attempting to use cross-sectional data in place of longitudinal data for mediation analyses.     

Still underdetected – Social norms and collective efficacy predict the acceptance of electric vehicles in Germany

The role of social identity variables for predicting environmental decisions may often be underdetected by psychological lay people. Applying this to the acceptance of electric vehicles (EVs) in Germany we investigated whether social norms and collective efficacy predict EV acceptance and what psychological laypersons who are either EV experts or EV non-experts think predicts EV acceptance. In preliminary interview studies we explored the beliefs of EV experts and EV non-experts. In a survey study, we then tested whether cost-related advantages and disadvantages were predictive of EV acceptance and whether norms and collective efficacy have independent effects even when controlling for cost-related factors and demographic variables. Results suggest that both EV experts and EV non-experts considered cost-related factors as much more important than social identity processes. However, hierarchical regression analyses of the survey data showed that norms and collective efficacy have equal or even stronger effects on acceptance than cost-related factors. We discuss the theoretical and practical implications of these findings.     

群际接触的次级转移效应(STE)的心理机制与影响因素

次级转移效应(secondary transfer effect,STE)是指群际接触的积极效应从直接接触的外群体转移到另一个未直接接触的外群体中。通过文献分析,找到了次级转移效应产生的中介变量(包括社会身份复杂性、群际移情和群际焦虑、多元文化主义以及态度的泛化)和调节变量(群体相似性、群体地位和社会支配倾向等)。今后的研究应坚持调查法与实验法等多种方法的结合,从多个维度测量群际接触与群体态度,探索和完善STE调节和中介变量,系统的验证变量之间的关系,从而完善和发展群际接触理论。     

When does high procedural fairness reduce self-evaluations following unfavorable outcomes?: The moderating effect of prevention focus

The present studies were designed to delineate when procedural fairness would be more versus less likely to be inversely related to people’s self-evaluations in response to unfavorable outcomes. Prior theory and research have shown that: (1) the more that people assign psychological significance to unfavorable outcomes, the more likely are their self-evaluations to be adversely affected by such outcomes, and (2) people who are more prevention focused in their self-regulatory orientation assign greater psychological significance to unfavorable outcomes. Consequently, we predicted that in the face of unfavorable outcomes, the inverse relationship between procedural fairness and self-evaluations would be more likely to emerge among those who are more prevention focused. Using different conceptions or operationalizations of all of the independent and dependent variables, we found support for this prediction in three studies, spanning different cultures, contexts, and methodologies.     

On the (In)Validity of Tests of Simple Mediation: Threats and Solutions

Mediation analysis is a popular framework for identifying underlying mechanisms in social psychology. In the context of simple mediation, we review and discuss the implications of three facets of mediation analysis: (a) conceptualization of the relations between the variables, (b) statistical approaches, and (c) relevant elements of design. We also highlight the issue of equivalent models that are inherent in simple mediation. The extent to which results are meaningful stem directly from choices regarding these three facets of mediation analysis. We conclude by discussing how mediation analysis can be better applied to examine causal processes, highlight the limits of simple mediation, and make recommendations for better practice.     

失业人员求职行为的影响因素及作用机制 ——基于沈阳市的一项研究

对失业人员求职行为影响因素的研究是开展失业人员求职培训的重要依据。本研究对272名失业人员的求职行为的影响因素及作用机制进行了研究。多元回归分析的结果表明,（1）环境变量对求职行为没有显著的预测作用,而经济压力和知觉到的就业机会对求职意向有显著的预测作用。（2）求职自我效能感和就业承诺对求职行为起到了显著的预测作用。求职自我效能感和就业承诺越高,求职行为的频率越高。（3）求职意向对求职行为有显著的正向预测作用。（4）求职意向在求职自我效能感、就业承诺对求职行为的作用过程中中介作用显著;在知觉到的就业机会、经济压力和社会支持对求职行为的作用过程中中介作用不显著     

语词分析下结构式写作在应对负性生活事件中的作用

对以结构式写作处理负性生活事件的90份写作文本进行语词分析,以语词分析类别中心理历程四个维度的语词数为自变量,以被试写作后SF-36量表总分、社会功能、躯体功能和情感职能得分为因变量进行的回归分析表明,对写作文本的认知历程对被试总体身心健康、社会功能和躯体功能状况均有正向作用,社会历程对躯体功能状况呈负向作用．感知历程中的特征因素对被试情绪职能呈负向作用。研究证实了书面叙述对负性生活事件的积极处理效应,并对认知与社会互动因素的作用机制进行了初步探索。     

新世纪20年国内心理统计方法研究回顾

新世纪头20年, 国内心理学11本专业期刊一共发表了213篇统计方法研究论文。研究范围主要包括以下10类(按论文篇数排序)：结构方程模型、测验信度、中介效应、效应量与检验力、纵向研究、调节效应、探索性因子分析、潜在类别模型、共同方法偏差和多层线性模型。对各类做了简单的回顾与梳理。结果发现, 国内心理统计方法研究的广度和深度都不断增加, 研究热点在相互融合中共同发展; 但综述类论文比例较大, 原创性研究论文比例有待提高, 研究力量也有待加强。     

How psychological resources mediate and perceived social support moderates the relationship between depressive symptoms and help-seeking intentions in college students

There is a high prevalence of depression among college students, which is linked to lower levels of help-seeking intentions. However, there has been a lack of research examining variables that may help explain this relationship. The present study aimed to address this gap by examining whether psychological resources (optimism and self-esteem) mediate the relationship between depressive symptoms and help-seeking intentions, and whether this relationship is moderated by perceived social support. Participants were 8121 college students (66% female) aged 17–25 years (M?=?20.42, SD?=?1.90), who completed the My World Survey Post-Second Level, a national survey on youth mental health. Linear regression analysis confirmed that depressive symptoms predicted lower informal help-seeking intentions. Moderated mediation indicated that social support moderated the direct relationship between depressive symptoms and informal help-seeking intentions and that optimism and self-esteem mediated this relationship, when gender was controlled for. Findings indicate that social support and psychological resources help further our understanding of the relationship between depressive symptoms and help-seeking in young people. Campaigns promoting help-seeking in college students should focus on the beneficial role of social support and on fostering optimism and self-esteem as facilitators of help-seeking intentions.     

Testing the degree of cross-sectional and longitudinal dependence between two discrete dynamic processes

Developmental research often involves studying change across 2 or more processes or constructs simultaneously. A natural question in this work is whether change in these 2 processes is related or independent. Associative latent transition analysis (ALTA) was designed to test hypotheses about the degree to which change in 2 discrete latent variables is related. The ALTA model is a type of latent class model, which is a categorical latent variable model based on categorical indicators. In the ALTA approach, level and change on 1 variable is predicted by level and change in another. Two types of hypotheses are discussed: (a) broad hypotheses of dependence between the 2 discrete latent variables and (b) targeted hypotheses comparing specific patterns of change between levels of the discrete variables. Both types of hypotheses are tested via nested model comparisons. Analyses of relations between psychological state and substance use illustrate the model. Recent psychological state and recent substance use were found to be associated cross-sectionally and longitudinally, implying that change in recent substance use was related to change in recent psychological state.     

累积生态风险与青少年网络成瘾:心理需要满足和积极结果预期的中介作用

青少年网络成瘾与个体所处的生态背景密切相关。目前已有不少研究探讨家庭、学校、同伴背景中单个或少数风险因素对青少年网络成瘾的影响,但少有研究关注多个背景中生态风险因素的累积对青少年网络成瘾的影响及其心理机制。本研究基于累积风险模型和动机心理学理论,考察累积生态风险对青少年网络成瘾的影响及基本心理需要满足(个体在现实生活中需要被满足的情况)和积极结果预期(个体对网络使用诱因大小的判断)在其中的并行和/或链式中介作用。被试为5所中学的998名青少年。结构方程模型分析表明:(1)在控制了人口学变量后,累积生态风险对青少年网络成瘾具有显著的正向预测作用(呈"负加速模式")。(2)累积生态风险通过显著降低基本心理需要满足(表现出"梯度效应"),进而促进青少年网络成瘾。(3)累积生态风险通过显著提升积极结果预期(呈"负加速模式"),进而促进青少年网络成瘾。(4)累积生态风险对青少年网络成瘾的影响被基本心理需要满足和积极结果预期两条并行路径完全中介。上述结果表明,累积生态风险对青少年网络成瘾具有重要影响,且这种影响是通过需要和诱因两种动机力量一"推"一"拉"的合力来实现。     

基于两水平被试内设计的中介效应分析方法

在心理学和其他社科研究领域,通常的中介效应分析都基于被试间设计,研究者对于如何分析基于被试内设计的中介效应往往并不清楚。本文阐述了两水平被试内设计的中介效应分析方法(依次检验法和路径分析法),综合各方法优缺点给出一个分析流程,并用应用研究实例演示如何分析两水平被试内中介效应,最后展望了基于被试内设计的中介效应分析研究的拓展方向。     

国内中介效应的方法学研究

中介效应可以分析自变量对因变量的影响过程和作用机制, 已成为分析多个变量之间关系的一种重要统计方法。最近20年, 中介效应成了研究方法的一个热点。从中介效应的检验方法、效应量、类别变量的中介效应检验、纵向数据的中介效应检验和模型拓展(包括多重中介、多层中介、有调节的中介和有中介的调节模型)五个方面系统总结了国内中介效应的方法学研究的发展历程。最后对中介效应的国外方法学研究进展和中介效应的未来研究方向做了讨论和拓展。     

Relative contributions of perceived mattering to parents and friends in predicting adolescents' psychological well-being

Perceived mattering is the psychological tendency to perceive the self as significant to specific other people. The central goal of this study was to examine whether adolescents' perceived mattering across social spheres (parents and friends) is addtive or compensatory in predicting adolescents' psychological well-being. Tests of the relative importance of adolescents' perceived mattering to parents and friends for psychological well-being were conducted using data from two convenience samples. Study 1 participants were, on the average, 17.5 yr. old and living in rural northwestern United States (N=128, 50% male, n=64; 50% female, n=64). Study 2 participants, on the average, were 16.9 yr. old, from a suburban western Canadian region (N=532, 51.4% male, n=273; 48.6% female, n=259). Hierarchical regression analysed with indicators of self-concept and behavioral misconduct as dependent variables used perceived mattering to parents and perceived mattering to friends and the interaction between these two variables as independent variables. Perceived mattering in both social spheres seemed the optimal condition for adolescents. Perceived mattering to friends "added" to perceived mattering to parents in explaining variance in assessments of psychological well-being in both studies.