Acetylcholine release in the hippocampus and striatum during place and response training

These experiments examined the release of acetylcholine in the hippocampus and striatum when rats were trained, within single sessions, on place or response versions of food-rewarded mazes. Microdialysis samples of extra-cellular fluid were collected from the hippocampus and striatum at 5-min increments before, during, and after training. These samples were later analyzed for ACh content using HPLC methods. In Experiment 1, ACh release in both the hippocampus and striatum increased during training on both the place and response tasks. The magnitude of increase of training-related ACh release in the striatum was greater in rats trained on the response task than in rats trained on the place task, while the magnitude of ACh release in the hippocampus was comparable in the two tasks. Experiment 2 tested the possibility that the hippocampus was engaged and participated in learning the response task, as well as the place task, because of the availability of extra-maze cues. Rats were trained on a response version of a maze under either cue-rich or cue-poor conditions. The findings indicate that ACh release in the hippocampus increased similarly under both cue conditions, but declined during training on the cue-poor condition, when spatial processing by the hippocampus would not be suitable for solving the maze. In addition, high baseline levels of ACh release in the hippocampus predicted rapid learning in the cue-rich condition and slow learning in the cue-poor condition. These findings suggest that ACh release in the hippocampus augments response learning when extra-maze cues can be used to solve the maze but impairs response learning when extra-maze cues are not available for use in solving the maze.     

贝施特和智顗论"恶"的宗教价值--兼谈宗教中的"善恶"观念

谈"善"论"恶"是宗教中的永恒话题,但宗教中的"善恶"并非仅仅是伦理学意义上的善恶,而是包括宗教修持意义上的"善恶".一般而言,"善"是有助于宗教修持的,但是贝施特和智顗却分别站在犹太教和中国佛教天台宗的立场揭示了"恶"对于宗教修持的积极作用,阐明了"恶"的宗教价值,尽管他们所说的"恶"的内涵不同.其中贝施特主张"恶"中分有"善"的神性,通过"恶"可以回归上帝;智顗主张"恶"中本具"善"的"实相",通过观"恶"的"烦恼心"可以达到解脱.可以说,在"恶"的宗教价值这个问题上,贝施特和智顗进行了一次跨宗教的对话.     

心算的加工机制：来自认知神经科学的研究

心算加工分编码（表征）、运算（或提取）和反应三个阶段,这三个阶段相互影响。不同输入形式的数字表征在顶叶的不同区域完成。算术知识提取主要与左脑顶内沟有关,但当心算变得更复杂时而需要具体运算时,左脑额叶下部出现明显激活。所有与心算有关的脑区涉及大脑前额皮层和颞顶枕联合皮层的综合作用,并总体表现为左脑优势,但估算、珠心算以及某些具有特殊心算能力的人的心算还依赖视空间表征,这与右脑额顶区和楔前叶的活动有关     

Hemispheric processing of lexical information in Chinese character recognition and its relationship to reading performance

Hemispheric predominance has been well documented in the visual perception of alphabetic words. However, the hemispheric processing of lexical information in Chinese character recognition and its relationship to reading performance are far from clear. In the divided visual field paradigm, participants were required to judge the orthography, phonology, or semantics of Chinese characters, which were presented randomly in the left or right visual field. The results showed a right visual field/left hemispheric superiority in the phonological judgment task, but no hemispheric advantage in the orthographic or semantic task was found. In addition, reaction times in the right visual field for phonological and semantic tasks were significantly correlated with the reading test score. These results suggest that both hemispheres involved in the orthographic and semantic processing of Chinese characters, and that the left lateralized phonological processing is important for Chinese fluent reading.     

Examining Effects of Self-Efficacy on Research Motivation Among Chinese University Teachers: Moderation of Leader Support and Mediation of Goal Orientations

Utilizing the Social Cognitive Career Theory (SCCT) as the theoretical framework, this study proposed a moderated mediation model investigating the complex functioning mechanisms of how self-efficacy beliefs and leader support can be related to research motivation among Chinese university teachers. A group of 310 Chinese teachers working in different universities completed an online survey. Results from structural equation modeling (SEM) analysis revealed distinct influencing paths from the predictor variables (i.e., self-efficacy and leader support) to the outcome variables (i.e., intrinsic and extrinsic research motivation). Specifically, self-efficacy beliefs predicted both mastery and performance goal orientations; mastery goal orientation, in turn, positively affected intrinsic and extrinsic research motivation. In contrast, leader support was non-significant for the both types of goal orientations, but exerted strong direct influences on the both types of research motivation. Bootstrapping methods in SEM showed that it was primarily the mastery goal orientation that mediated the relationships between self-efficacy beliefs and research motivation. Furthermore, the results from the SEM and simple slope analysis revealed that leader support moderated the association between self-efficacy and extrinsic research motivation.     

Statistical Foundations for Computerized Adaptive Testing with Response Revision

Psychometrika - The compatibility of computerized adaptive testing (CAT) with response revision has been a topic of debate in psychometrics for many years. The problem is to provide test takers...     

Political Attitudes and the Processing of Misinformation Corrections

Misinformation often continues to influence people’s memory and inferential reasoning after it has been retracted; this is known as the continued influence effect (CIE). Previous research investigating the role of attitude‐based motivated reasoning in this context has found conflicting results: Some studies have found that worldview can have a strong impact on the magnitude of the CIE, such that retractions are less effective if the misinformation is congruent with a person’s relevant attitudes, in which case the retractions can even backfire. Other studies have failed to find evidence for an effect of attitudes on the processing of misinformation corrections. The present study used political misinformation—specifically fictional scenarios involving misconduct by politicians from left‐wing and right‐wing parties—and tested participants identifying with those political parties. Results showed that in this type of scenario, partisan attitudes have an impact on the processing of retractions, in particular (1) if the misinformation relates to a general assertion rather than just a specific singular event and (2) if the misinformation is congruent with a conservative partisanship.     

The Moderating Effect of Cognitive Flexibility in the Relationship Between Work Stress and Psychological Symptoms in Korean Air Force Pilots

Stress is closely associated with not only physical illness but also with indices of psychological maladjustment. However, such negative mental health outcomes may vary depending on the individual’s cognitive style, or perception of stress. Air force pilots are particularly vulnerable to experience a high degree of stress as they are required to conduct missions while simultaneously monitoring for safety in complex and uncertain flight situations. It can thus be posited that appropriate use of cognitive stress management strategies is one of the crucial competency requirements for pilots. As such, the present study examined the effects of stress on psychological symptoms of Korean Air Force pilots and further investigated the moderating role of cognitive flexibility in this relationship. A total of 192 air force pilots participated in the present study. The results indicated that degree of stress was positively correlated with indices of psychological maladjustment, while cognitive flexibility was negatively associated with psychological symptoms. Furthermore, cognitive flexibility demonstrated a significant moderating effect on the relationship between stress and psychological symptoms. Such results suggest that cognitive flexibility may serve as a protective factor in the potential effects of stress on psychological adjustment. Implications and suggestions for future research are discussed.     

Chaos,danger, and maternal parenting in families: Links with adolescent adjustment in low‐ and middle‐income countries

The current longitudinal study is the first comparative investigation across low‐ and middle‐income countries (LMICs) to test the hypothesis that harsher and less affectionate maternal parenting (child age 14 years, on average) statistically mediates the prediction from prior household chaos and neighborhood danger (at 13 years) to subsequent adolescent maladjustment (externalizing, internalizing, and school performance problems at 15 years). The sample included 511 urban families in six LMICs: China, Colombia, Jordan, Kenya, the Philippines, and Thailand. Multigroup structural equation modeling showed consistent associations between chaos, danger, affectionate and harsh parenting, and adolescent adjustment problems. There was some support for the hypothesis, with nearly all countries showing a modest indirect effect of maternal hostility (but not affection) for adolescent externalizing, internalizing, and scholastic problems. Results provide further evidence that chaotic home and dangerous neighborhood environments increase risk for adolescent maladjustment in LMIC contexts, via harsher maternal parenting.