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831.
运用在体多通道神经元放电同步记录技术, 观察和记录大鼠在完成T-迷宫成本效益决策任务时前扣带回神经元放电和局部场电位的变化及氟哌啶醇对此的改变, 在细胞水平上探讨前扣带回在决策中的作用以及多巴胺递质系统对决策的作用机制。结果显示, 经过一段时间的训练, 10只大鼠中有8只偏好高付出-高奖赏端, 且在选择高付出-高奖赏端时的神经元放电频率要显著高于选择低付出-低奖赏端时的频率, 同时局部场电位也呈现出事件相关性; 腹腔注射多巴胺受体拮抗剂氟哌啶醇后, 大鼠不再偏好高付出-高奖赏端, 对该端的选择显著减少, 而对低付出-低奖赏端的选择显著增加, 且神经元的放电频率和局部场电位显著降低, 神经元放电和局部场电位的特征性也消失。研究提示, 前扣带回和多巴胺在努力相关决策任务中有着至关重要的作用。 相似文献
832.
833.
This study investigated the relationship between overgeneral autobiographical memory and social problem solving in posttraumatic stress disorder (PTSD). Civilian trauma survivors with and without PTSD (N=41) provided autobiographical memories of events in response to positive and negative cue words. Participants also completed the means-end problem-solving (MEPS) procedure. PTSD participants reported more overgeneral memories, regardless of cue valence, than non-PTSD participants. Individuals with PTSD also displayed poorer problem solving than those without PTSD. Overgeneral autobiographical memory was strongly associated with deficits in problem solving. This study suggests that deficient problem solving in PTSD is associated with impaired retrieval of specific autobiographical memories. 相似文献
834.
Shu‐Ying Chen Pui‐Wa Lei Wen‐Han Liao 《The British journal of mathematical and statistical psychology》2008,61(2):471-492
This paper proposes an on‐line version of the Sympson and Hetter procedure with test overlap control (SHT) that can provide item exposure control at both the item and test levels on the fly without iterative simulations. The on‐line procedure is similar to the SHT procedure in that exposure parameters are used for simultaneous control of item exposure rates and test overlap rate. The exposure parameters for the on‐line procedure, however, are updated sequentially on the fly, rather than through iterative simulations conducted prior to operational computerized adaptive tests (CATs). Unlike the SHT procedure, the on‐line version can control item exposure rate and test overlap rate without time‐consuming iterative simulations even when item pools or examinee populations have been changed. Moreover, the on‐line procedure was found to perform better than the SHT procedure in controlling item exposure and test overlap for examinees who take tests earlier. Compared with two other on‐line alternatives, this proposed on‐line method provided the best all‐around test security control. Thus, it would be an efficient procedure for controlling item exposure and test overlap in CATs. 相似文献
835.
The relationship between intrinsic motivation and home literacy of preschoolers was explored. One hundred and seventy-seven preschool children (3.8 to 6.6 years old) in Mainland China and one of the parents who primarily took care of each child participated in the study. Six indicators were considered as a measure of home literacy. Results showed that after controlling for parents' education level and children's age, three home literacy indicators-parental model of reading behaviour, number of books, and years of character teaching-could explain children's intrinsic reading motivation. Contrary to previous Western studies, Chinese children's freedom of book choice was not related to their intrinsic reading motivation. Results are discussed in the context of culture differences. 相似文献
836.
This study examined the association of scores on measures of traditionality and gratitude. Briefly defined, traditionality refers to how strongly one endorses the traditional value of submission to authority for harmony and benefits in a collective group. Traditional Taiwanese culture is linked with collectivism, and the society tends to encourage members to respect authority and harmony. As people of a collectivistic view seek to maintain harmony within the group, gratitude and reciprocity of good is expected from members. Nevertheless, traditionality of values differs among group members, as is also true for gratitude. It is not known how scores on traditionality might relate to feelings of gratitude among athletes in the competitive sports setting. 289 Taiwanese high school athletes were administered the Sport-domain Gratitude Questionnaire by Chen and Kee and the Traditionality Scale by Kao and Lu. Data, subjected to structural equation modeling, show that traditionality scores were related to those on gratitude. Implications and limitations were discussed. 相似文献
837.
Eye movements and parafoveal word processing in reading Chinese 总被引:1,自引:0,他引:1
838.
Perceived deep-level dissimilarity: Personality antecedents and impact on overall job attitude, helping, work withdrawal, and turnover 总被引:1,自引:0,他引:1
Hui Liao Aichia Chuang Aparna Joshi 《Organizational behavior and human decision processes》2008,106(2):106-124
The current research extends three research areas in relational demography: considering deep-level dissimilarity in theory building, assessing dissimilarity perceptions directly in theory testing, and examining the antecedents of dissimilarity perceptions. The results, based on two field studies using diverse samples, demonstrate the effects of enduring personality traits of Extraversion and Agreeableness on an individual’s perceived deep-level dissimilarity to coworkers in the workgroup, and the effects of perceived deep-level dissimilarity beyond the effects of actual dissimilarity and perceived surface-level dissimilarity on critical work outcomes, including the individual’s overall job attitude, and behaviors of helping, work withdrawal, and actual voluntary turnover. 相似文献
839.
"礼"是整个儒家思想的核心内容,是前现代中国社会人们思想、行为的最高规范,是维系社会生活的纽带.在早期儒家"礼"的体系中,充满了浓重的宗教信仰的思想.其信仰形态和过程,是由信仰天地、鬼神而推衍社会、人事的,並由此建构起一套完整的信仰系统,来指导人们的社会生活.三代"礼"学,表现出自发宗教的崇拜特征,春秋战国,人为宗教信仰贯穿到了"礼"学,形成了"神道设教"的"礼教",使得宗教与宗法、信仰与道德、神性与理性、理想与实践,趋向于和谐、统一. 相似文献
840.