General,Work-Specific,and Work-Role Conscientiousness Measures in Predicting Work Criteria: A Comparative Perspective

The current study compared general, work-specific, and work-role measures of conscientiousness as predictors of job satisfaction, organizational commitment, turnover intention, job engagement, and task performance. As expected, work-role conscientiousness yielded stronger relationships with five of the ten work-related criteria than general conscientiousness, and with six of the ten criteria than work-specific conscientiousness. More importantly, work-role conscientiousness displayed incremental validity in predicting nearly all work-related criteria, when controlling for general and work-specific conscientiousness alone or in combination. It is also worth noting that six of ten analyses found that work-role conscientiousness demonstrated greater relative importance compared to its counterparts. Finally, we found that the context in which the items were completed moderated the relationships between work-role conscientiousness and two work-related criteria (i.e., job satisfaction and organizational commitment). Together, these results suggest that researchers should consider the work-role measure of conscientiousness in the prediction of work criteria.     

Cognitive diagnosis modelling incorporating item response times

To provide more refined diagnostic feedback with collateral information in item response times (RTs), this study proposed joint modelling of attributes and response speed using item responses and RTs simultaneously for cognitive diagnosis. For illustration, an extended deterministic input, noisy ‘and’ gate (DINA) model was proposed for joint modelling of responses and RTs. Model parameter estimation was explored using the Bayesian Markov chain Monte Carlo (MCMC) method. The PISA 2012 computer-based mathematics data were analysed first. These real data estimates were treated as true values in a subsequent simulation study. A follow-up simulation study with ideal testing conditions was conducted as well to further evaluate model parameter recovery. The results indicated that model parameters could be well recovered using the MCMC approach. Further, incorporating RTs into the DINA model would improve attribute and profile correct classification rates and result in more accurate and precise estimation of the model parameters.     

移动医疗视域下HIV/AIDS患者自我管理体验及需求的质性研究

采用目的抽样选取成都市、绵阳市及西昌市19名HIV/AIDS患者作为研究对象,采用描述性质性研究对研究对象进行半结构式访谈,对访谈结果进行主题分析,共提炼出一级主题5个：（1）患者有基于移动医疗的自我管理需求;（2）基于移动医疗自我管理平台期望载体及形式;（3）基于移动医疗的医疗或行为管理需求;（4）基于移动医疗的角色管理需求;（5）基于移动医疗的情绪管理需求。患者对基于移动医疗的自我管理平台有较高接受度。可设计开发易用性与隐私性强的移动医疗平台,通过提供疾病知识、线上诊疗、疾病监测与心理社会支持等功能,提升患者自我管理能力。

     

Mechanical behaviour of an Al–matrix composite reinforced with nanocrystalline Al-coated B4C particulates

In metal–matrix composites (MMCs), interfacial bonding between the metal matrix and the ceramic reinforcement plays a crucial role in their mechanical performance. In the present study, B₄C particles were cryomilled with an Al alloy to produce a composite powder, in which the B₄C was uniformly distributed in nanocrystalline Al. The cryomilling developed a strong bond between the B₄C and the Al, allowing the nanocrystalline Al to act as a coating with a strong ceramic–metal interface. This cryomilled composite powder was then introduced, as a reinforcement, into a conventional Al alloy to strengthen the material. After consolidation, the result was a bulk Al–matrix composite reinforced with B₄C particles encapsulated in nanocrystalline Al. This composite exhibits greatly improved strength and stiffness.     

The environment influences whether high-fat foods are associated with palatable or with unhealthy

This study investigated whether relatively automatic evaluations of food differ between situations and between obese people and lean controls. These evaluations were assessed in the affective priming paradigm (APP) -- a response latency based measure for associations. In Experiment 1, we either focused participants (33 obese and 26 lean controls) on the palatability (restaurant condition) or on the healthiness (health condition) of food, prior to the APP. Independent of weight-status, relatively automatic evaluations of food were based on palatability in the restaurant condition, and on health in the health condition. So, the current focus of attention can shape the way foods are evaluated relatively automatically. In Experiment 2, craving was induced in participants (27 obese and 29 lean controls). Unexpectedly, the craving induction did not achieve its goal of focusing on the palatability of food in general, but just for low-fat foods, possibly because of the health-emphasizing environment -- a hospital. Interestingly, obese people showed a stronger palatability priming effect with increasing levels of initial craving. For normal weight controls the effect was in the same direction, but missed significance. In our environment, palatability of food may be too salient, and health may not be salient enough, influencing automatic food-evaluations.     

Some effects of stimulant medication on response allocation: a double-blind analysis

Children who are diagnosed with attention deficit hyperactivity disorder (or who engage in behavior consistent with such a diagnosis) are often prescribed stimulant medications for hyperactive or inattentive behaviors. However, the mechanisms by which stimulant medications affect individuals' behavior are rarely evaluated. The purpose of the current study was to evaluate the effects of stimulant medication on response allocation when antecedents and consequences were held constant and equated. Results indicated that the presence of an amphetamine medication (Adderall) influenced response allocation across two concurrently available responses while all other stimulus conditions were held constant.     

First graders' literacy and self-regulation gains: The effect of individualizing student instruction

We examined the effect of individualizing student instruction (ISI; N = 445 students, 46 classrooms) on first graders' self-regulation gains compared to a business-as-usual control group. Self-regulation, conceptualized as a constellation of executive skills, was positively associated with academic development. We hypothesized that the ISI intervention's emphasis on teacher planning and organization, classroom management, and the opportunity for students to work independently and in small groups would promote students' self-regulation. We found no main effect of ISI on self-regulation gains. However, for students with weaker initial self-regulation, ISI was associated with greater self-regulation gains compared to peers in control classrooms. The ISI effect on self-regulation was greater when the intervention was more fully implemented.