帕金森病与重症抑郁障碍两者中的抑郁及睡眠障碍特征对比

由于帕金森病早期常仅存在抑郁、睡眠障碍等非运动症状表现,其与重症抑郁障碍难以鉴别.本研究通过对帕金森病患者及重症抑郁障碍患者行汉密尔顿抑郁量表、匹兹堡睡眠指数及多导睡眠监测评定抑郁及睡眠特征,尝试发现两者之间差异,为早期鉴别及诊断帕金森病提供理论基础.     

中学生消费决策风格的特点及其与家庭理财教育方式的关系

该研究以377名中学生为被试,探讨了中学生消费决策风格的特点及其与家庭理财教育方式的关系。结果表明:(1)中学生消费决策风格部分符合Shim(1996)提出的二阶模型(包括质量导向、非理性导向、享乐导向和价格导向等四个二阶因子);(2)中学生消费决策风格的年级差异不显著,性别差异显著,男生在品牌导向上高于女生,在流行导向和娱乐导向上低于女生;(3)中学生消费决策风格可划分为决策随意型、决策紊乱型、决策理智型和决策实惠型;(4)父母消极的理财教育方式会导致中学生形成非理性导向或享乐导向的消费决策风格,而积极的教育引导则能在一定程度上减弱中学生的非理性决策风格,促进其形成质量导向的决策风格。     

Building trust to increase purchase intentions: The signaling impact of low pricing policies

We examine the differential signaling impact of two low pricing policies, Price Matching Guarantees and Everyday Low Prices, on consumers' trusting beliefs and purchase intentions. We demonstrate that both PMG and EDLP pricing policies signal stores' ability to offer lower prices. However, whether these sellers were perceived as benevolent, and—consequently—consumers' purchase intentions, varied critically depending upon price uncertainty. Perceived benevolence and purchase intentions were significantly higher [lower] for sellers offering PMG than EDLP when price dispersion was high [low]. Our findings offer insights into whether and under what conditions firms should adopt these low pricing policies.     

Students’ Perceptions of Unsafe Schools: An Ecological Systems Analysis

In the aftermath of several school shooting incidents in recent years, students’ perceptions of unsafe schools has been a major concern for parents, teachers, school officials, school practitioners, and policy-makers. Using Bronfenbrenner’s ecological systems framework, we examined the micro-, meso-, and exosystem level factors associated with perceptions of unsafe school environments in a nationally representative sample of 10- to 15-year-old youth in the United States. We found that for the socio-demographic characteristics, students who were older, male, and poor had increased risks of perceiving higher levels of unsafe school environments. Within the microsystem of the family, our results indicate that parent-youth discussions of school activities/events decreased the risk of students perceiving unsafe schools. All of the school environment variables—ease of making friends, teachers’ involvement, observed weapon carrying, and school rule enforcement—were related in the expected direction to students’ perceiving their schools as unsafe. At the mesosystem level, findings from our study demonstrate that variables measuring parental school involvement were unrelated to perceptions of school safety. Finally, at the exosystem level, we found that students’ perceptions of residing in a safer neighborhood and residence in a non-central city metropolitan area, compared with a central city, decreased the odds of perceiving school environments as unsafe. School policy and practice implications are discussed.     

Neural correlates of audiovisual integration of semantic category information

Previous studies have found a late frontal-central audiovisual interaction during the time period about 150-220 ms post-stimulus. However, it is unclear to which process is this audiovisual interaction related: to processing of acoustical features or to classification of stimuli? To investigate this question, event-related potentials were recorded during a words-categorization task with stimuli presented in the auditory-visual modality. In the experiment, congruency of the visual and auditory stimuli was manipulated. Results showed that within the window of about 180-210 ms post-stimulus more positive values were elicited by category-congruent audiovisual stimuli than category-incongruent audiovisual stimuli. This indicates that the late frontal-central audiovisual interaction is related to audiovisual integration of semantic category information.     

Mechanism of isoflavone aglycone's effect on cognitive performance of senescence-accelerated mice

This study investigated the effect of isoflavone aglycone (IA) on the learning and memory performance of senescence-accelerated mice, and explored its neural protective mechanism. Results showed that SAM-P/8 senescence-accelerated mice treated with IA performed significantly better in the Y-maze cognitive test than the no treatment control (P<0.05). The cortex AchE activity, serum SOD and GSH-Px activities were notably higher (P<0.05). MDA concentration and the β-secretase activity in the hippocampal tissue were both lower (P<0.05). Additionally, the number of hippocampal neurons was increased and cell morphology was significantly improved. Data suggested that IA could indirectly increase concentration of the cholinergic neural transmitter Ach through regulation of AchE, therefore improving the central cholinergic function and enhancing the learning and memory ability. By reducing the β-secretase activity, IA could decrease the formation and deposition of insoluble Adebris, relieve the resulted toxicity and damage to neurons, and thereby effectively protect the nervous system.     

Correction to: Organizational Benefits of Onboarding Contingent Workers: an Anchoring Model Approach

Journal of Business and Psychology -     

Goal complexes: Integrating achievement goals as standards and self-attributed motives as reasons underlying goal pursuit

Goal complexes, which are formed by pairing standards of competence strivings with their underlying reasons, are essential to an understanding of achievement goal regulation. This paper examines goal complexes that cross other-approach and other-avoidance goals with the approach-avoidance dimensions of Big Three motives as underlying reasons. 220 undergraduates participated in Study 1 which developed and validated the Self-Attributed Motive Scale to measure hope of success, fear of failure, hope of affiliation, fear of rejection, hope of power, and fear of loss of power. Additionally, 235 undergraduates participated in Study 2 where goal complexes were created by crossing the motive items developed in Study 1 with other-approach and other-avoidance goals. The predictive utility of the resultant goal complexes was examined in relation to positive well-being (positive learning-related emotions and engagement), negative well-being (negative learning-related emotions and burnout), and academic buoyancy. The contributions of the studies to the self-attributed motive and goal complex literatures are discussed.

     

Intentionality and partial belief

Suppose we wish to provide a naturalistic account of intentionality. Like several other philosophers, we focus on the intentionality of belief, hoping that we may later supplement our account to accommodate other intentional states like desires and fears. Now suppose that we also take partial beliefs or credences seriously. In cashing out our favoured theory of intentionality, we may for the sake of simplicity talk as if belief is merely binary or all-or-nothing. But we should be able to supplement or modify our account to accommodate credences. I shall argue, however, that it is difficult to do so with respect to certain causal or teleological theories of intentionality-in particular, those advanced by the likes of Stalnaker (Inquiry, 1984) and Millikan (J Philos 86:281–297, 1989). I shall first show that such theories are tailor-made to account for the intentionality of binary beliefs. Then I shall argue that it is hard to extend or supplement such theories to accommodate credences. Finally, I shall offer some natural ways of modifying the theories that involve an appeal to objective probabilities. But unfortunately, such modifications face problems.