Meta-Analysis: A Reflection On Problems

Since 1977 there has been considerable debate regarding the relative efficacy of meta-analysis as a research methodology. The authors implemented a meta-analysis to examine the question of the nature of the association between self-perception and performance or achievements levels. The study (128 research studies; 1136 correlations) made us aware of the problems associated with designing and implementing a meta-analysis. This paper discussed in some detail the problems encountered, namely topic selection, the literature search, coding procedures, sampling the literature, the use of a common metric, the use of significance tests, costs and time involved, and publication.     

A Meta-Analysis of Research on Hindsight Bias

We conducted a meta-analysis of research on hindsight bias to gain an up-to-date summary of the overall strength of hindsight effects and to test hypotheses about potential moderators of hindsight distortion. A total of 95 studies (83 published and 12 unpublished) were included, and 252 independent effect sizes were coded for moderator variables in 3 broad categories involving characteristics of the study, of measurement, and of the experimental manipulation. When excluding missing effect sizes, the overall mean effect size was Md = .39 with a 95% confidence interval of .36 to .42. Five main findings emerged: (a) effect sizes calculated from objective probability estimates were larger than effect sizes calculated from subjective probability estimates; (b) effect sizes of studies that used almanac questions were larger than effect sizes of studies that used real-world events or case histories; (c) studies that included neutral outcomes resulted in larger effect sizes than studies that used positive or negative outcomes; (d) studies that included manipulations to increase hindsight bias resulted in significantly larger effect sizes than studies in which there were no manipulations to reduce or increase hindsight bias; and (e) studies that included manipulations to reduce hindsight bias did not produce lower effect sizes. These findings contribute to our understanding of hindsight bias by updating the state of knowledge, widening the range of known moderator variables, identifying factors that may activate different mediating processes, and highlighting critical gaps in the research literature.     

A Meta-Analysis of Research on Protection Motivation Theory

This article reports the first meta-analysis of the literature on protection motivation theory (Rogers, 1975, 1983; Rogers & Prentice-Dunn, 1997), a model of disease prevention and health promotion that has generated research for over two decades. The literature review included 65 relevant studies ( N = approximately 30,000) that represented over 20 health issues. The mean overall effect size ( d += 0.52) was of moderate magnitude. In general, increases in threat severity, threat vulnerability, response efficacy, and self-efficacy facilitated adaptive intentions or behaviors. Conversely, decreases in maladaptive response rewards and adaptive response costs increased adaptive intentions or behaviors. This held true whether the measures were based on intentions or behaviors, and suggests that PMT components may be useful for individual and community interventions.     

Neglected and Rejected Children: A Social-Skills Model

This study examined the hypothesis that rejected children's inability to interact successfully with their peers stems from misperception of nonverbal communication cues, whereas neglected children have the necessary perceptual skills and their inability arises because they are unable to use them. Comparisons were made among 5- and 9-year-old neglected, rejected, and control children (six groups, N = 15 per group) on four tasks: affective empathy, cognitive empathy, decoding of facial expressions of emotion, and decoding of emotional situations. The results, which were consistent with the hypothesis, are interpreted in a social-skills model based on the work of Argyle and Powers.     

Meta-Analysis of Pragmatic and Theoretical Research: A Critique

Meta-analysis refers to a set of statistical procedures used to summarize and integrate many empirical studies that focus on one issue. This numerical method of integrating research findings is said to be superior to the narrative type of reviews because it is more objective, reliable, and rigorous. Moreover, the meta-analytic approach is supposedly capable of resolving research controversies, strengthening empirical hypotheses, and discovering new relationships among variables. In this study, these claims are examined and found to be wanting. Some objections to the use of meta-analysis as a means of substantiating theoretical assertions are raised with reference to the rationale of experimentation and to how knowledge evolves. It is concluded that it is inappropriate to apply meta-analysis to integrate theoretical research.     

On Being Holier-Than-Thou or Humbler-Than-Thee: A Social-Psychological Perspective on Religiousness and Humility

This research examined the association between religiousness and humility. Participants in Studies 1 and 2 completed measures of religiousness, socially desirable responding, and their own and other people's adherence to biblical commandments. Participants in Study 2 also rated how characteristic nonreligious positive and negative trait terms were of the self and others. Humility was operationalized as the magnitude of difference between individuals' evaluations of self and other. Overvaluing the self in relation to others or undervaluing others in relation to the self was considered evidence of less humility. Participants rated the self to be more adherent to biblical commandments than others (the holier-than-thou effect) and rated the self to be more positive and less negative than others (the self-other bias). In both studies, intrinsic religiousness was associated with an increase in the tendency to rate the self as more adherent to biblical commandments than others. Quest was associated with a slight decrease in the magnitude of the holier-than-thou effect. Religious motivations did not account for unique variation in the general self-other bias. Irrespective of motivations for being religious, however, highly religious people (i.e., upper thirds on general religiousness and religious fundamentalism) more so than less religious people (i.e., lower thirds on general religiousness and religious fundamentalism) rated the self to be better on nonreligious attributes than others.     

On Being Lutheran In A Religiously Plural World

Abstract : For those of us who are self‐consciously Lutheran, the reality of contemporary religious pluralism engenders important theological questions. The thesis of this essay is that “being Lutheran” within the context of contemporary religious pluralism requires the creation of “Lutheran identity” that is pluralistic in structure, while simultaneously avoiding either theological exclusivism or theological inclusivism. The implications of this thesis are that (1) dialogue with the religious traditions of the world is of primary importance for thinking Lutherans, and (2) the church's witness and mission needs to be reconfigured in light of the practice of interreligious dialogue.     

论卡尔纳普拒斥形而上学之得失

卡尔纳普是现代西方哲学家拒斥形而上学的典型代表,以哲学科学化的立场,分析科学概念和澄清哲学问题是他哲学活动的基本目标。卡尔纳普通过自己的哲学活动,极大推进了科学哲学的发展,为现代科学的发展做出了极大的贡献,然而他在激烈拒斥形而上学上,不可避免地存在着许多偏颇与失误之处。     

Psychological Research on Organisational Democracy: A Meta-Analysis of Individual,Organisational, and Societal Outcomes

Our meta-analytic review investigates how employee participation in democratic enterprises is related to psychological outcomes. We gathered 60 studies through a systematic literature search of quantitative field studies (published between January 1970 and May 2017) and extracted 138 effect sizes related to three indicators of organisational democracy (OD) and 15 psychological outcomes. The overall findings suggest that employees’ individually perceived participation in organisational decision making (IPD) had a stronger relation to job satisfaction (ρ = .25), job involvement/work motivation (ρ = .36), prosocial work behaviours (ρ = .24), civic and democratic behaviours (ρ = .21) and perceived supportive climate (ρ = .44) than the other two OD indicators: structurally anchored employee participation (SAEP) and employee participation in collective ownership (EO). This was not the case for value-based commitment: the relations of SAEP (ρ = .40), EO (ρ = .34), and IPD (ρ = .46) with commitment were nearly equal. Mediation analyses indicated that IPD partially mediated most of the effects of SAEP and EO on the outcomes mentioned. The cross-sectional database and a small number of studies for some of the outcomes are the main limitations of this study.     

Influences on Loneliness in Older Adults: A Meta-Analysis

A widely held stereotype associates old age with social isolation and loneliness. However, only 5% to 15% percent of older adults report frequent loneliness. In this study, we report a meta-analysis of the correlates of loneliness in late adulthood. A U-shaped association between age and loneliness is identified. Quality of social network is correlated more strongly with loneliness, compared to quantity; contacts with friends and neighbors show stronger associations with loneliness, compared to contacts with family members. Being a woman, having low socioeconomic status and low competence, and living in nursing homes were also associated with higher loneliness. Age differences in the association of social contacts and competence with loneliness are investigated as well.     

Corticosteroids and Cognition: A Meta-Analysis

Neuropsychology Review - A thorough understanding of the cognitive effects of corticosteroids is essential given their frequency of use. This meta-analysis was conducted to investigate the effects...     

The Effects of Contact on Sexual Prejudice: A Meta-Analysis

A meta-analysis was conducted to examine the relationship between contact and sexual prejudice. A quantitative synthesis with 83 effect sizes from 41 articles, using mostly samples from the United States, showed a significant negative relationship between contact and sexual prejudice. Among six possible moderators tested (type of sexual prejudice scale used, correlational versus experimental studies, attitudes toward lesbians versus gay men, publication year, quality of study, and where study was conducted), three were shown to significantly moderate the relationship between contact and sexual prejudice. The relationship between contact and sexual prejudice varied as a function of the type of sexual prejudice measure used, the target group toward which the prejudicial attitudes were assessed, and where the study was conducted.     

On Being a Whistleblower: The Needleman Case

We believe that members of the scientific community have a primary obligation to promote integrity in research and that this obligation includes a duty to report observations that suggest misconduct to agencies that are empowered to examine and evaluate such evidence. Consonant with this responsibility, we became whistleblowers in the case of Herbert Needleman. His 1979 study (Needleman et al., 1979), on the effects of low-level lead exposure on children, is widely cited and highly influential in the formulation of public policy on lead. The opportunity we had to examine subject selection and data analyses from this study was prematurely halted by efforts to prevent disclosure of our observations. Nevertheless, what we saw left us with serious concerns. We hope that the events here summarized will contribute to revisions of process by which allegations of scientific misconduct are handled and that such revisions will result in less damage to scientists who speak out.     

On the Logic of Acceptance and Rejection

The logic of acceptance and rejection (AEL2) is a nonmonotonic formalism to represent states of knowledge of an introspective agent making decisions about available information. Though having much in common, AEL2 differs from Moore's autoepistemic logic (AEL) by the fact that the agent not only can accept or reject a given fact, but he/she also has the possibility not to make any decision in case he/she does not have enough knowledge.     

A Compatibilist-Friendly Rejection of Prepunishment

In a series of recent papers, Saul Smilansky has argued that compatibilists have no principled way of resisting the view that prepunishment is at least sometimes appropriate, thus revealing compatibilism to be a radical position, out of keeping with our ordinary moral judgments. Recent attempts to resist this conclusion seem to have overlooked the biggest problem with Smilansky’s argument, which is this: Smilanksy argues that the most obvious objection to prepunishment—namely, that it is inappropriate because it involves punishing the innocent for crimes they have not committed—is unavailable to compatibilists. If compatibilism is true, he says, then if it is causally determined that someone is going to commit a crime, the fact that one has not yet done so is a mere temporal matter bearing no moral significance. I argue that there is no reason for compatibilists to accept this point. Compatibilists can (and should) resist Smilansky's claim that one’s not yet having committed a crime is morally insignificant and so resist the temptation to prepunish.