The (Non) Religion of Mechanical Turk Workers

Social science researchers have increasingly come to utilize Amazon's Mechanical Turk (MTurk) to obtain adult, opt‐in samples for use with experiments. Based on the demographic characteristics of MTurk samples, studies have provided some support for the representativeness of MTurk. Others have warranted caution based on demographic characteristics and comparisons of reliability. Yet, what is missing is an examination of the most glaring demographic difference in MTurk—religion. We compare five MTurk samples with a student convenience sample and the 2012 General Social Survey, finding that MTurk samples have a consistent bias toward nonreligion. MTurk surveys significantly overrepresent seculars and underrepresent Catholics and evangelical Protestants. We then compare the religiosity of religious identifiers across samples as well as relationships between religiosity and partisanship, finding many similarities and a few important differences from the general population.     

Cognitive and Psychosocial Consequences of Hurricanes Katrina and Rita Among Middle-Aged, Older, and Oldest-Old Adults in the Louisiana Healthy Aging Study (LHAS)

This study examined the impact of Hurricanes Katrina and Rita on cognitive and psychosocial functioning among middle-aged (45-64 years), older (65-89 years) and oldest-old adults (90 years and over) in the Louisiana Healthy Aging Study (LHAS). Analyses of pre- and post-disaster cognitive data showed storm-related decrements in working memory for the middle-aged and older adults, but not for the oldest-old adults. Regression analyses confirmed that measures of social engagement and storm-related disruption significantly predicted pre- to post-disaster differences in short-term and working memory performance for the middle-aged and older adults only. These results are consistent with a burden perspective on post-disaster psychological reactions. Implications for current views of disaster reactions are discussed.     

Effects of crystallization on corrosion resistance and electron work function of Zr65Al7.5Cu17.5Ni10 amorphous alloys

The effects of crystallization on the electron work function and corrosion resistance of Zr₆₅Al_7.5Cu_17.5Ni₁₀ amorphous alloys have been studied. The single-phase amorphous alloy exhibits a better corrosion resistance and has a higher work function than the partially and fully crystallized alloys with the same composition. The close relationship between corrosion resistance and work function indicates that the Kelvin probe technique can be a powerful tool for characterizing the corrosion behaviour of amorphous alloy on an electronic level.     

Dialectical thinking and health behaviors: The effects of theory of planned behavior

The primary purpose of this study was to investigate whether the theory of planned behavior (TPB) mediated the relationship between dialectical thinking and health behaviors. A sample of 285 undergraduates was tested with a dialectical thinking styles scale, health promoting lifestyle profiles, and TPB questionnaires. Structural equation modeling was used for data analysis. Results indicated that all the three dimensions of thinking styles (belief in the connection, acceptance of change, and acceptance of contradiction) exerted significant effects on TPB constructs. Specifically, the connection and the change dimensions had positive effects on health behaviors mediated by TPB, whereas the contradiction dimension had a negative effect. Model 2 showed a satisfactory fit, demonstrating the influential pathways between dialectical thinking and health behaviors. Implications in issues of health promotion and future research are discussed.     

Respuesta a los comentarios

RESUMEN

Crespo comienza manifestando que su propósito es sondear, aunque sea de forma elemental, la posibilidad y potencial productividad de una consideración de la racionalidad como elemento explicativo dentro de una teoría social de las actitudes. El autor explica que un concepto no exclusivamente utilitario o instrumental de la racionalidad puede ser de utilidad para comprender ciertos desarrollos de la dinámica actitudinal, en concreto, aquellos en que es posible pensar que cambiamos de actitud porque somos argumentalmente convencidos. Crespo resalta la posibilidad de considerar las actitudes, entendidas como procesos de significación evaluativa o toma de postura respecto a otros significativos, como procesos sociales susceptibles de enjuiciamiento y eventualmente necesitados de legitimación o justificación. El autor finaliza su trabajo repasando extensamente algunas características del concepto de actitud en relación con su carácter evaluativo y su vinculación a la acción. Los comentarios de Amalio Blanco, Charles Antaki y M^a Dolores Avia valorando esta exposición siguen a la misma, al igual que la respuesta de Crespo a estos autores.     

Career Plateauing and Institutional/Occupational Intention for Taiwanese Career Officers

This study examines regulatory focus as a mediator between the perception of reaching a career plateau and institutional/occupational (I/O) intention in the Taiwanese military. Empirical data were collected from 632 career officers receiving full-time training at the National Defense University. For the identification of military value, we found that Taiwanese career officers’ occupational intentions were higher than their institutional intentions. Additionally, the results indicate that prevention focus completely mediated occupational intention and that promotion focus partially mediating institutional intention. Practical management and research implications are discussed and a direction for future research is suggested.     

High-pressure phase transition and lattice dynamics of rock-salt and FeSi-type phases of MgS

A phase transition of MgS under high pressure is investigated using a first-principles method. It is found from energy-volume calculations that the rock-salt (B1) phase of MgS transforms into a FeSi-type (B28) phase at 143?GPa. The calculated ground-state parameters in the B1 phase are in excellent agreement with available experimental and theoretical data. Ab initio phonon calculations are also performed to investigate the structural behaviour of MgS under high pressure. An unstable transverse acoustic mode and a phase transition from B1 to B28 phase at ~143.7?GPa driven by this soft mode are predicted. The B28 structure of MgS is stable up to 350?GPa according to lattice dynamics calculations.     

学龄儿童的情景记忆与心理理论的关系

为考察学龄儿童心理理论与情景记忆的关系,111名小学4-6年级儿童在两周内完成了心理理论(包括二级错误信念、失言和白谎等)和情景记忆(回忆过去"一个星期内"、"一个月内"和"一年内"亲历的具体事件;以及想象将来"一个星期内"、"一个月内"和"一年内"可能发生在自己身上的具体事件)等任务。控制了年龄效应后,线性回归分析发现儿童回忆过去时"谈及他人"、想象将来时"谈及自我"和"谈及他人"与心理理论的认知成分存在显著关联。而儿童回忆过去时"谈及他人"与心理理论的情感成分有显著关联。结果表明,学龄儿童心理理论可以分为认知成分和情感成分,情景记忆与心理理论不同成分的关系存在差异。     

Role of magnitude of reinforcement in spaced-trial instrumental learning in turtles (Geoclemys reevesii)

The runway performance of turtles (Geoclemys reevesii) was studied as a function of magnitude of reinforcement under spaced training conditions (one trial per day). A large reward magnitude (24 pellets) produced faster acquisition than a small magnitude (2 pellets). After a shift from the large to the small magnitude, latencies of the shifted animals continued to be significantly lower than the latencies of the non-shifted, small-magnitude controls, and similar to those of the non-shifted, large-magnitude controls. There was no evidence of the successive negative contrast effect. Extinction latencies were also significantly lower after training with the large magnitude than after training with the small magnitude; that is, there was no evidence of the magnitude of reinforcement extinction effect. The results are discussed in relation to the comparative analysis of the so-called paradoxical effects of reward, a family of learning phenomena that has not yet been found in a variety of experiments with fish, amphibians, and reptiles trained under widely spaced conditions.     

School Substance Use Norms and Racial Composition Moderate Parental and Peer Influences on Adolescent Substance Use

Parental and peer influences on adolescent substance use have been well demonstrated. However, limited research has examined how parental and peer influences vary across school contexts. This study used a multilevel approach to examine the effects of school substance use norms and school racial composition in predicting adolescent substance use (a composite measure of alcohol, tobacco, and marijuana use) and in moderating parental and peer influences on adolescent substance use. A total of 14,346 adolescents from 34 schools in a mid‐western county completed surveys electronically at school. Analyses were conducted using hierarchical linear modeling. Results indicated that school‐level disapproval against substance use and percentage of minority students at school were negatively associated with adolescent substance use. School‐level disapproval moderated the association between peer substance use and adolescent substance use, with the association being stronger when school‐level disapproval was lower. School racial composition moderated the influence of parental disapproval and peer substance use on adolescent substance use. Specifically, both the association between parental disapproval and adolescent substance use and the association between peer substance use and adolescent substance use were weaker for adolescents who attended schools with higher percentages of minority students. Findings highlighted the importance of considering the role of school contexts, in conjunction with parental and peer influences, in understanding adolescent substance use.