Minority Representation in Special Education: 5-Year Trends

The disproportionate representation of minority students in special education has been a concern for decades. The Individuals with Disabilities Education Act mandates states to have policies and procedures in place to prevent inappropriate over identification or disproportionate representation by race and ethnicity of students with disabilities. The purpose of this study was to investigate the current status of minority representation in special education given the mandate and related efforts to reduce overrepresentation and to identify trends for the 5-year period from 2004 to 2008. Growth models were used to analyze trends in national data collected from the 50 states and the District of Columbia for these 5 years. Findings indicate some improvements from 10 years ago, especially noteworthy are a significant decrease in the number of African American students and a moderate decrease in the number of Hispanic students categorized as having intellectual disabilities. However, during the same period, the number of Hispanic students in learning disabilities increased. Otherwise, the trend of racial/ethnic representation in special education remains the same as it was a decade ago.     

Deformation behaviour and 6H-LPSO structure formation at nanoindentation in lamellar high Nb containing TiAl alloy

Microstructure and deformation mechanisms at a nanoindentation in the lamellar colony of high Nb containing TiAl alloy have been studied using the focused ion beam and the transmission electron microscopy. Considerable deformation twins are observed around the nanoindentation, and a strain gradient is generated. A continuous change in the bending angle of the lamellar structure can be derived, and a strain-induced grain refinement process is observed as various active deformations split the γ grains into subgrains. In addition to all possible deformation mechanisms (ordinary dislocation, super-dislocation and deformation twining) activated due to the heavy plastic deformation, a 6-layer hexagonal (6H) long-period stacking ordered structure is identified for the first time near the contact zone and is thought to be closely related to the glide of partial dislocations.     

创造性人格与员工创造力:一个被调节的中介模型研究

本文基于动机行动和成就动机理论,构建一个被调节的中介模型以检验创造性人格对员工创造力产生的作用机理。以251套来自主管-下属配对的问卷数据为样本,实证分析结果表明:创造性人格可预测员工创造力产生,学习目标导向与绩效证明目标导向在两者之间起部分中介作用;内在动机能够强化个体目标导向对创造力的作用,并显著正向调节创造性人格对员工创造力的间接效应。最后,论文讨论了研究发现对员工创造力产生的理论和实践意义。     

Cross-level moderating effects of Conscientiousness on within-person relationships of self-efficacy to effort allocation

Studies examining within-person level self-efficacy effects on effort allocation have produced mixed results, ranging from positive, to null, to negative. Drawing on individual differences literature, we propose that the within-person relationship between self-efficacy and effort allocation depends on Conscientiousness, a personality trait reflecting the will to achieve and capacity to self-discipline. Individuals with higher levels of Conscientiousness will respond to lower self-efficacy with increased effort, resulting in an inverse relationship between self-efficacy and effort expenditure. In contrast, individuals with lower levels of Conscientiousness will need higher self-efficacy to stay task focused and sustain effort allocation, leading to a positive effect of self-efficacy on effort expenditure. Findings from a 3-week daily diary study generally support the hypothesized moderating effects of Conscientiousness. Theoretical and practical implications are discussed.     

Formation of profuse <c+a> dislocations in deformed calcium-containing magnesium alloys

We report that <c+a> pyramidal slipping could be more easily activated in textured Mg–Ca alloys with increasing Ca contents dissolved in α-Mg matrix under tensile deformation, and it is proposed that the decreased stacking fault energy plays the critical rule. In contrast, only twins and <a> basal dislocations are observed in the compressed samples. The results would provide insight into understanding of the deformation mechanism and designing more ductile Mg alloys.     

The cultural dimension of intergroup conspiracy theories

Although conspiracy theories are ubiquitous across times and cultures, research has not investigated how cultural dimensions may predict conspiracy beliefs. The present research examined intergroup conspiracy beliefs in United States and Chinese samples at the peak of the trade war. In two studies (one pre-registered; total N = 1,092), we asked US participants to what extent they believed Chinese institutions and companies were conspiring against the United states and Chinese participants to what extent they believed US institutions and companies were conspiring against China. Results revealed that such beliefs were stronger among Chinese than US participants due to higher power distance values and vertical collectivism. In particular, these cultural dimensions were associated with increased psychological involvement in intergroup conflict (as reflected by higher levels of collective narcissism and perceived outgroup threat), which in turn predicted intergroup conspiracy beliefs. Exploratory analyses suggested that particularly power distance values mediate these effects. We conclude that cultural dimensions that promote hierarchy in society are associated with increased intergroup conspiracy beliefs.     

Health Consequences of Online Social Capital among Middle-Aged and Older Adults in China

With the rapid development of Internet techniques in China, more and more Chinese middle-aged and older adults have begun to use the Internet for their daily social interactions, and the resulting online social capital may affect their health. Using data from the Chinese General Social Survey of 2017 (n = 7733, aged 45–90 years old), this study investigated the influence of online social capital on the health of middle-aged and older adults in China, and the Heckman sample selection model was used to address potential sample selection bias in Internet use. The results show that number of online contacts significantly improved the physical health of middle-aged and older adults, while the level of depression was significantly reduced by online closeness of non-specific relationships, but more online interactions may slightly increase their depression. Furthermore, more online contacts were associated with elevated physical health among male, rural, less-educated and middle-aged adults, while more online closeness of non-specific relationships was associated with less depression in almost all subgroups. Online social capital can improve the health of middle-aged and older adults in China, so we should help increase older adults’ access to the Internet and improve their Internet skills to give full play to the positive health effect of online social capital. However, it should be alert to the negative health consequences caused by excessive Internet use.