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排序方式: 共有1392条查询结果,搜索用时 140 毫秒
41.
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.  相似文献   
42.
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.  相似文献   
43.
Hu Z  Zhang R  Zhang Q  Liu Q  Li H 《Brain and language》2012,121(1):70-75
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.  相似文献   
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Yang H  Jin G  Ren D  Luo S  Zhou T 《Brain and cognition》2011,76(1):206-210
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.  相似文献   
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47.
奢侈品品牌热衷于使用可爱风格与消费者进行互动。本文以理想自我理论为基础,通过4个实验探索奢侈品品牌可爱风格类型对消费者偏好的影响机制和边界条件。实验1表明奢侈品品牌的可爱风格(婴儿图式/古灵精怪)会显著地影响消费者的品牌偏好,验证了主效应的因果链模型。实验2进一步明确了主效应的边界,结果表明品牌可爱风格对消费者偏好的影响只在奢侈品品牌的情境下才存在。实验3探索了自我监控水平对主效应的调节作用,发现对于低自我监控的个体,奢侈品品牌的可爱风格难以有效地影响品牌偏好。实验4分析了个体发展阶段对主效应的调节作用,结果表明对于成年期个体,古灵精怪可爱风格比婴儿图式可爱风格更能提高个体的奢侈品品牌偏好,对于童年期个体,婴儿图式可爱风格比古灵精怪可爱风格更易获得青睐。  相似文献   
48.

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.

  相似文献   
49.
感觉与认知是否是相互独立的?本研究通过对比先天盲被试与明眼被试在进行物体颜色判断时的行为反应和神经电生理信号变化,探讨视觉经验缺失对颜色认知的影响。结果发现,先天盲被试具有一定的颜色知识,但其水平低于明眼被试;两组被试都出现了由颜色不匹配所诱发的N400效应,且都表现出左半球优势;但是盲人组的N400效应大于明眼组,盲人组的N400反应潜伏期小于明眼组。该结果说明,直接的视觉经验是颜色认知的充分条件而非必要条件。  相似文献   
50.
通过问卷调查的方式,采用同胞不同经历问卷、关系网络问卷和问题行为量表对开封市1179名初高中学生进行研究。研究结果显示:(1)父母差别对待与外/内化问题行为呈显著正相关;同胞关系与外/内化问题行为呈显著负相关;父母差别对待和同胞关系呈显著负相关。(2)同胞关系在父母差别对待与外/内化问题行为之间起部分中介作用。(3)“父母差别对待→同胞关系→外/内化问题行为”这一中介路径的前半段受出生顺序调节;与年幼个体相比,父母差别对待对年长个体的同胞关系影响更大。出生顺序会调节父母差别对待对同胞关系的影响,提示二胎家庭要更关注年长个体的变化。  相似文献   
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