Sensitivity as a Privileged Predictor of Attachment: A Second Perspective on De Wolff and van IJzendoorn's Meta-analysis

De Wolff and van IJzendoorn's meta‐analysis supported the relation of parental behavior to attachment security; however, they concluded that sensitivity was not the best predictor of attachment security. This secondary analysis of their data re‐examined their conclusion and tested moderators of the relation between sensitivity and attachment, such as socioeconomic status and study methodology. A different grouping of studies combining behavior types of sensitivity, mutuality, and synchrony showed significantly higher correlations with attachment than did other types of maternal behavior. An analysis of a similar dataset of individual correlations defined sensitivity as synchronous, responsive, and appropriate behavior, producing similar results. Tests of moderators validated differences between studies using measures of sensitivity as compared to other measures of maternal behavior. Sensitivity was a weaker predictor of attachment in studies of low‐income families.     

Assessment of the Dose–Response Relationship Between Folate Exposure and Cognitive Impairment: Synthesizing Data from Documented Studies

The dose–response relationship between folate levels and cognitive impairment among individuals with vitamin B12 deficiency is an essential component of a risk-benefit analysis approach to regulatory and policy recommendations regarding folic acid fortification. Epidemiological studies provide data that are potentially useful for addressing this research question, but the lack of analysis and reporting of data in a manner suitable for dose–response purposes hinders the application of the traditional evidence synthesis process. This study aimed to estimate a quantitative dose–response relationship between folate exposure and the risk of cognitive impairment among older adults with vitamin B12 deficiency using “probabilistic meta-analysis,” a novel approach for synthesizing data from observational studies. Second-order multistage regression was identified as the best-fit model for the association between the probability of cognitive impairment and serum folate levels based on data generated by randomly sampling probabilistic distributions with parameters estimated based on summarized information reported in relevant publications. The findings indicate a “J-shape” effect of serum folate levels on the occurrence of cognitive impairment. In particular, an excessive level of folate exposure is predicted to be associated with a higher risk of cognitive impairment, albeit with greater uncertainty than the association between low folate exposure and cognitive impairment. This study directly contributes to the development of a practical solution to synthesize observational evidence for dose–response assessment purposes, which will help strengthen future nutritional risk assessments for the purpose of informing decisions on nutrient fortification in food.     

Closed doors everywhere? A meta-analysis of field experiments on ethnic discrimination in rental housing markets

Discrimination is long seen as a meaningful factor for ethnic inequalities on rental housing markets. Yet empirically, the extent of discrimination is still debatable. For the first time, this article provides a quantitative meta-analysis of field experiments (in person audits and correspondence tests) that were run over the last four decades in the United States, Canada and Europe (N?=?71). Special focus is given to a possible inflation of effect sizes by publication bias; to time trends; and to evidence for statistical discrimination. Taken together, nearly all experiments document the occurrence of ethnic discrimination. Effect sizes are inflated by publication bias, but there is still substantial evidence left once the bias is removed. The analysis reveals a consistent decline in the extent of discrimination over time, from moderate levels of discrimination in the 1970s and 1980s, up to only small but still statistically significant levels in the 1990s and 2000s. A significant part of the discriminatory behaviour can be attributed to missing information about the social status of applicants, which supports theories on statistical discrimination. It is discussed how future research could move our knowledge on the underlying mechanisms forward.     

人力资源管理实践与组织绩效关系的元分析:从不同实践内容和文化视角切入

基于当前人力资源管理实践与组织绩效关系研究结论不一的现状,对国内外31种重要期刊的101篇实证研究论文进行了元分析。同时,针对二者关系研究中对人力资源管理实践内容分类不一的问题,在综合各种分类方式的基础上提出了新的二维划分方式,并检验了不同实践内容与组织绩效的关系。此外,还将101篇实证文献按照东西方不同文化背景对研究对象加以细分,对比研究了人力资源管理实践在不同文化下的作用。     

Changes in the Chinese Population’s Fertility Intentions: 1980-2011

On the basis of the findings of 227 surveys of Chinese fertility intentions over the years 1980-2011, this paper investigates the longitudinal changes in fertility intentions through cross-temporal meta-analysis. It is found that the ideal number of children for the Chinese trended downwards from 1980, but since 2000 the average number has remained basically stable at 1.6 to 1.8. In the 1980s, people’s fertility levels were higher than their fertility intentions. With economic and educational progress in China, both fertility levels and fertility intentions showed a downward trend, with the former declining faster than the latter. Since 1990, people’s fertility levels have been lower than their fertility intentions; that is, their actual number of children has been less than their ideal number. This provides an empirical basis for examining the changes in China’s fertility intentions and fertility levels.     

Social media,political expression,and participation in Confucian Asia

This study reviews and analyzes the published empirical research on the role of social media in promoting political expression and participation in Confucian Asia, including China, Hong Kong, Singapore, South Korea, and Taiwan. In addition to providing a narrative review of the literature, our analyses show clear numerical estimates of the relationships among different types of social media use (i.e., informational, expressive, relational, and recreational), political expression, and participation in Confucian states. The findings reiterate the importance of the expressive use of social media, showing its moderately strong relationship with participation. The findings also show weak positive relationships with informational and relational uses. We also examine the role of political systems in these relationships and conclude that the strongest relationships are in democratic states, followed by hybrid and authoritarian systems.     

Relationships between personality variables and burnout: A meta-analysis

Abstract

Most burnout research has focussed on environmental correlates, but it is likely that personality factors also play an important part in the development of burnout. Previous meta-analyses, however, have been limited in scope. The present meta-analysis examined the relationship between personality and three dimensions of the Maslach Burnout Inventory (MBI): emotional exhaustion, depersonalization, and personal accomplishment. Consistent with our hypotheses, self-esteem, self-efficacy, locus of control, emotional stability, extraversion, conscientiousness, agreeableness, positive affectivity, negative affectivity, optimism, proactive personality, and hardiness, each yielded significant relationships with burnout. Type A Personality, however, was only related to personal accomplishment. Furthermore, regression analysis found that core self-evaluations, the Five-Factor Model personality characteristics, and positive and negative affectivity explained significant variance in each of the burnout dimensions. Finally, moderator analyses found several instances in which the strength of personality–burnout relationships depended upon whether burnout was assessed with the Human Services Survey of the MBI or the General Survey version of the MBI. It is concluded that employee personality is consistently related to burnout. Given the practical importance of employee burnout, it is recommended that personality variables be included as predictors in future research on burnout.     

中学男女生人格比较研究的元分析

对过去10年关于中学男女学生人格研究结果进行的元分析。结果显示男生和女生的人格特质在总体来说的确存在差异，女生的乐群性、敏感性、幻想性和自律性显著高于男生，男生的稳定性和恃强性显著高于女生。地域差异、样本量、研究质量和文章发表的年代效应对一些人格特质的效应值有显著影响。