拖延行为的发展认知机制及神经基础

拖延是指尽管预见到拖延会带来不利后果, 人们仍自愿推迟开始或完成某一计划好的任务。研究表明, 不同文化背景下有15%~20%的成年人存在慢性拖延, 超过70%的学生承认自己存在学业拖延, 部分学生还会形成特质性拖延。严重的拖延不仅影响人们的学业、工作和生活, 甚至还会危害到人们的身心健康。鉴于目前对于拖延产生的核心机制、形成的关键期以及发展认知神经机制还不是很清楚, 本项目拟从拖延的时间决策理论出发, 首先系统探明拖延决策的核心机制, 尤其是远期价值评估、延迟折扣和自我控制能力等在拖延决策过程中的认知加工机制和神经基础; 其次结合行为-环境变量-脑的多模态数据, 从发展角度探究拖延形成的关键期(敏感期)、影响因素以及发展认知神经机制; 最后从行为干预和脑的可塑性角度出发, 试图制定各关键年龄阶段拖延预防与干预的临床方案。本研究的开展对于把握拖延形成的认知机制、神经基础及其发展规律具有重要的科学价值, 对于拖延行为的预防和干预也具有直接的现实意义。     

特征信息和呈现时间对异族面孔知觉的影响

为了探讨面孔认知中内部特征和加工时间对种族判断的影响,采用面孔种族评价任务,选用被试内设计,通过操纵内部特征替换部位,刺激呈现时间,以及种族三个自变量进行研究.结果发现:对中国被试来说,面孔种族信息的获取是一个随时间不断累积信息的过程.在此过程中鼻和口特征并不能提供有效的亚洲和高加索种族信息,眼部特征和构型信息在加工中...     

廖平的《左传》研究

随着今文经学的复兴,晚清学术在今古文学的激烈冲突中展开。在这一过程中,《左传》研究一直是核心的内容。晚清《左传》研究主要呈现出刘逢禄、康有为为代表的今文学与章太炎为代表的古文学两大学派争论的态势。廖平的《左传》研究,与两派的学术路径既有联系,有呈现出不同的学术特色,在晚清学术研究中独树一帜,值得关注。     

Validity of the multiple-stimulus without replacement preference assessment for edible items

Studies have shown that the multiple-stimulus without replacement (MSWO) preference assessment is an effective assessment format for identifying preferred items. However, it is possible that factors other than reinforcer quality might influence selections by some individuals when the MSWO array consists of edible items. The validity of the MSWO results was evaluated by comparing items identified as most and least preferred by the MSWO assessment in a concurrent-schedule (CS) format. Varying edible items were used in each study. The MSWO format accurately identified the higher quality edible item for most participants across studies (76%); however, the MSWO format did not predict the highest quality edible item in the CS assessment for 20% to 30% of participants in each study.     

Infant positioning: A brief review

The American Academy of Pediatrics (2016a) has made several recommendations regarding the safe positioning of infants by caregivers, including placing infants in a supine position for sleep and in prone for supervised periods of tummy time. However, caregivers may have difficulty adhering with these recommendations. A small, but growing, number of behavior analytic studies have examined these infant safety recommendations and strategies for increasing adherence. This review describes behavior analytic research on infant positioning and provides suggestions for future research.     

A preliminary evaluation of treatment duration on the resurgence of destructive behavior

Quantitative models of resurgence (e.g., Behavioral Momentum Theory, Resurgence as Choice) suggest that resurgence is partly a function of the duration of extinction exposure, with longer histories of extinction producing less resurgence. This prediction is supported by some laboratory research and has been partially supported by clinical translations that did not isolate the effects of extinction exposure prior to testing for resurgence. The degree to which different histories of extinction impact the likelihood of treatment relapse in therapeutic applications of differential reinforcement is of great interest to the clinical community, including insurance carriers and other financial providers. In the present study, we isolated the effects of extinction history for severe destructive behavior across 6 participants referred for treatment services and examined resurgence of destructive behavior when alternative reinforcement terminated. Our within-subject evaluation showed no difference in the level of resurgence or persistence of destructive behavior following short and long exposures to differential reinforcement with extinction. We discuss our failure to replicate in relation to experimental-design considerations for investigating this and other relapse phenomena in future research with clinical populations.     

Toward the bigger picture: Concrete and abstract thinking about a transgression,and the role of time in interpersonal forgiveness

Rumination is commonly considered detrimental to forgiveness. In contrast, we propose that different forms of post-transgression thinking are differentially effective for forgiveness, depending on their timing. Concrete thinking focuses on event details, whereas abstract thinking abstracts from details and views the event in a broader context. Following construal level theory, we propose that concrete thinking is increasingly ill-matched, and abstract thinking better matched, to the construal abilities and motivation afforded by psychological distance. Hence, over time, concrete thinking would be negatively, and abstract thinking positively, associated with forgiveness. Two correlational recall studies, with time since transgression measured (Study 1) or manipulated (Study 2), demonstrated that with greater temporal distance concrete thinking was more negatively, and abstract thinking more positively, related to forgiveness. Study 3 employed a prospective-longitudinal methodology over five time-points; intra-individual decrease in concrete thinking and increase in abstract thinking over time were related to higher levels of forgiveness.     

Feeling time in nature: The influence of directed and undirected attention on time awareness

In the present study, we examined the impact of the interaction of environmental and task-induced attentional focus on time perception, specifically awareness of the time flow. We tested 48 participants in either a natural or urban setting over three 25- to 35-min sessions. We manipulated the within-subjects factor task by means of two tasks—one requiring directed attention on the task itself, the other undirected attention on the environment—alongside a control condition with no specific task. We measured time awareness, passage of time judgments, felt time judgments, and estimated time as dependent variables. For time awareness, we found an interaction between environment and task: in the natural environment, only a task requiring directed attention reduced time awareness; whereas, in the urban environment, both tasks reduced time awareness compared to the control condition. The results suggest that natural environments increase time awareness unless we focus our attention on a task.