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721.
The effects of a specific presynaptic cholinergic antagonist, toosendanin, on memory formation following a passive avoidance training experience in day-old chicks was investigated. Bilateral injection of toosendanin into the neostriatal/hyperstriatal region of the chick forebrain produced memory impairment in a dose-dependent manner. Retention deficits were apparent from 20 min following training in chicks treated with toosendanin, regardless of the injection time relative to training. Chicks that received injections of the drug at corresponding times prior to retention tests showed normal retention levels, suggesting that toosendanin has no effect on performance and memory retrieval. These results indicate an involvement of cholinergic transmission during an early stage of memory formation. 相似文献
722.
大学生空间思惟的性别差异研究 总被引:2,自引:0,他引:2
本实验运用填图和拼图两项测验,通过对137名大学生被试进行研究,结果表明,就大学生这一层次而言,男女两性的空间思惟在整体上表现出的差异不具显著性,整个分布情况是:在连续分布的两端男生均高于女生。研究结果也表明,在空间思惟上,大学生也存在着明显的个性差异。 相似文献
723.
Nader Hakim Rachel Eggert Christina La Rosa Amelia Zhao 《Social and Personality Psychology Compass》2023,17(12):e12897
The COVID-19 pandemic placed preexisting racial health disparities in stark relief. Recent studies have already established that, among prejudiced Whites, exposure to such racial disparities reduced concern about the pandemic and support for mitigation policies (Harrel & Lieberman, 2021; Stephens-Dougan, 2022). In response to such results, one cautionary line of reasoning argues that communicating the disparity figures without explanatory context can perpetuate (or at least not undermine) myths that African Americans are more likely to contract COVID-19 due to genetic predispositions or maladaptive behavioral tendencies (Chowkwanyun & Reed, 2020). In two studies, we test the claims that (a) explanatory context mitigates the tendency to attribute racial disparities to essential racial differences and (b) that perceptions of racial disparities are attuned to specific racial inequalities in the U.S., and not merely expressions of outgroup bias. In Study 1, we found that exposure to racial disparities with explanatory context (vs. without explanatory context) did not reduce racial essentialism or stereotyping, but did promote support for healthcare equity. In Study 2, we found that black disadvantage frames (vs. white vs. Hispanic) uniquely promoted support for equitable healthcare and multicultural inclusion. Importantly, and contrary to other recent findings, exposure to black disadvantage did not preclude support for equity. 相似文献
724.
Teng Zhao Jiayi Liu Alissa M. Zawacki Jesse S. Michel Hairong Li 《Journal of Occupational & Organizational Psychology》2023,96(1):1-32
Organizational researchers and practitioners have shown increasing interest in how newcomer proactivity contributes to socialization. This meta-analysis synthesizes the existing empirical research that examines the relationships between frequently performed newcomer proactive behaviours (sensemaking, relationship building, positive framing and job change negotiation) and proximal and distal socialization outcomes. Proximal outcomes include role clarity, task mastery and social integration; distal outcomes include job performance, job satisfaction, organizational commitment and turnover intention. Based on 45 independent samples (N = 11,508), proactive behaviours were found to be generally beneficial for newcomer socialization. Relative weight analyses identified positive framing as the strongest predictor of five of the seven reviewed outcomes while relationship building accounted for the greatest part of the variance in social integration. Job change negotiation was the weakest predictor of socialization outcomes. The study also explored the impact of boundary conditions, including culture, study design and sample type, on the magnitude of these effects. The paper concludes by discussing the theoretical and practical implications of these findings, along with the study's limitations and suggestions for future research. 相似文献
725.
采用视觉习惯化实验程序、陌生情境技术及母亲行为Q分类方法对41名14个月的学步儿及其母亲进行了学步儿内部工作模式、学步儿在陌生情境中的依恋类型以及母亲在母婴互动中的敏感性的评估。结果发现:(1)不安全型的学步儿预期看护者对他们痛苦的信号是无回应的。(2)以自身为中心的母亲的学步儿预期看护者是无回应的。(3)潜类别分析的结果发现母亲敏感性影响学步儿依恋行为的2种关系模式:类别1, 以孩子为中心的母亲的学步儿更容易形成看护者是有回应的预期, 持这种预期的学步儿在陌生情境程序中表现出安全依恋行为; 类别2, 以自身为中心的母亲养育出的学步儿更容易对看护者形成无回应的预期, 并在陌生情境中表现出不安全依恋行为。研究表明:内部工作模式在母亲的敏感性和学步儿的依恋安全性之间起着重要的内部机制作用—— 母亲的敏感性行为的累积促进了学步儿内部工作模式关于母亲的预期, 这种预期又进一步引导着学步儿的依恋行为。 相似文献
726.
本文主要从道教生态美学的本质、行为体现、生命活力等方面探讨了道教生态美学的特点及现实意义,重点论述了人和自然的和谐统一、贵生和寡欲的辩证协调、传统与现代的继承创新等道教生态美学特点的基本内容.学习和研究道教生态美学,对于继承和发扬道教生态思想中的审美意蕴,建立中国特色社会主义的生态美学具有重要意义. 相似文献
727.
728.
关于自由的一种存在论观点 总被引:13,自引:0,他引:13
一、关于自由的准备性理解自由、幸福和公正是在伦理学中必须讨论的三个基本问题 ,但是 ,自由并不是伦理学问题 ,而是伦理学的哲学基础问题 (与之不同 ,幸福和公正则是伦理学的核心问题 )。这样一个细微的区分并非没有必要 ,因为在现代社会里 ,绝大多数人都把自由看作是一种价值 ,而这是一个细微但是重要的错误。价值意味着关于各种事物的一种评价标准和生活偏好 ,人们有着不同的价值观 ,因此总能够选择或者拒绝某种价值。假如把自由看作是一种价值 ,就好像是说 ,某些人喜欢自由 ,那么他们将选择自由 ;而某些人没有对自由的价值偏好 ,那么他… 相似文献
729.
730.