规则多边图形的离散度、图基边数及显示条件的交互作用研究

用实验方法研究规则多边图形的离散度、图形基边数、显示条件及三因素的交互作用对图形信号认知绩效的影响。实验的自变量有：（１）图形的离散度参数;（２）图形的基边数;（３）图形的显示条件。因变量是各图形信号的平均反应时。实验的刺激材料是２５个不同离散度、不同基边数的规则多边图形。刺激材料的呈现与被试的反应记录都由计算机控制。结果表明：（１）离散度对图形信号认知绩效的影响十分显著,离散度适中及偏小的图形信号认知绩效较高;（２）图形基边数对认知绩效的影响十分显著,认知绩效反比于图形的基边数;（３）显示条件对认知绩效的影响不显著;（４）离散度与基边数的交互作用影响显著,离散度偏大的０．６,０．７图形与离散度偏小及适中的０．３,０．４,０．５图形的认知绩效在基边数大于８后出现明显的分离趋势。     

2~3岁儿童在分配情境下的公平敏感性

公平敏感性是指个体对感知到的公平和不公平的稳定而个性化的反应, 其表现为个体对公平的不同偏好。本研究旨在考察2~3岁儿童公平敏感性发展特点, 并进一步探究分配情境、分配数量和分配结果等因素对儿童公平敏感性的影响。实验1采用VOE范式, 在第三方任务情境下, 考察130名2~3岁儿童公平敏感性的发展特点, 结果发现在VOE范式下, 2~3岁儿童公平敏感性随着年龄增长而上升, 3岁~3岁3个月儿童的公平敏感性发展最明显。实验2, 选取60名处于公平敏感性发展最明显的3岁~3岁3个月的儿童比较其在不同分配情境、分配数量以及分配结果下的注视时间差异。结果表明, 在有接受者情境下儿童公平敏感性显著高于无接受者情境下的公平敏感性, 并且公平敏感性受分配数量的影响。     

知情不同意

自主原则是医学伦理学的基本原则之一,自主权是患者的基本权利.从临床实践出发,分析了患者知情后拒绝治疗的自主选择与其他利益相冲突的情况,总结了医生尊重患者自主权利的伦理条件,对指导临床实践具有一定的现实意义.     

Knowing Is Not Enough

I consider the rule of assertion according to which knowledge is sufficient for epistemically proper assertion. I examine a counterexample to this rule recently proposed by Jennifer Lackey. I present three responses to this counterexample. The first two, I argue, highlight some flaws in the counterexample. But the third response fails. The lessons I draw from examining these three responses allow me to propose two counterexamples to the sufficiency rule that are similar to Lackey’s but avoid its problems.     

权变视角下的情绪劳动:调节变量及其作用机制

调节变量是近年来情绪劳动研究关注的重点问题之一。实证研究显示,反映员工个体特征、工作情境特征的多组变量以及文化情境对情绪劳动效应具有显著的调节作用。权变视角下的情绪劳动研究发现:(1)展现规则在组织、行业、文化三个不同水平影响个体在工作场所的情绪表达;(2)表层扮演潜在的消极效应可以借助个体内在的保护机制或通过组织管理干预被削弱、消除,甚至是转化为积极的力量;(3)深层扮演的积极效应具有较高的跨人群、跨情境稳定性;(4)文化情境对情绪劳动作用过程具有重要的约束作用。在一定条件下,情绪劳动要求、情绪劳动行为都可以成为有益于员工的组织生活要素。     

鼓励条件下幼儿提问的发展

以7所幼儿园的141名3～6岁儿童为被试,采用实验方法,探讨幼儿在8种新异刺激条件下提问的发展.结果表明:(1)3～6岁幼儿提问生成的数量随着年龄的增长而提高;(2)幼儿在对当前刺激产生陌生感或出现认知混乱时更容易生成问题;(3)立体刺激材料和平面刺激材料在引发幼儿提问生成上不存在差异;(4)3～6岁幼儿提问元认知随年龄的增长而提高.3～4岁期间是提问原因元认知快速发展时期.     

成败情境下不同成就目标取向学生业绩表现的差异

以五、六年级小学生为被试,在设置成功与失败的情境下,考察不同成就目标取向学生业绩表现的差异。结果发现:(1)在两种情境下,掌握目标取向的学生有最高的业绩表现,失败情境下的业绩表现高于成功情境;(2)成绩接近目标取向的学生,在失败情境下的业绩表现与成功情境无显著差异,在成功情境下的业绩表现略高于成绩回避目标取向的学生,失败情境下的业绩表现高于成绩回避目标取向的学生。(3)成绩回避目标取向的学生在失败情境下的业绩表现显著低于成功情境。     

An experimental investigation of the automatic/voluntary dissociation in limb apraxia

The ability of apraxic patients to perform gestures in everyday life is a controversial issue. In this paper, we aimed to evaluate the automatic/voluntary dissociation (AVD) in four patients affected by clinically relevant limb apraxia. For this purpose, we sampled different kinds of gestures belonging to patients' motor repertoire and then assessed their production in a testing session. Our experimental procedure consisted of two steps: in the first phase, we recorded gestures produced by patients in two natural conditions; in the second phase, we assessed production of correctly produced tool-actions, and of spontaneous non tool-actions and meaningless conversational (cohesive and beats) gestures under different modalities. AVD was observed for all types of gestures, albeit to different degree in single patients. The present findings demonstrate that the context provides strong bottom-up cues for the retrieval of motor patterns, while artificial testing conditions impose an additional cognitive load.     

Leisure items as controls in the attention condition of functional analyses

Leisure items (e.g., games, toys) are commonly made available as controls during attention conditions of functional analyses (Ringdahl, Winborn, Andelman, & Kitsukawa, 2002). However, Ringdahl et al. raised questions about this practice. This paper reviews research that supports and conflicts with the inclusion of leisure items as controls, including a quantitative analysis of relevant articles published in the Journal of Applied Behavior Analysis over a 10-year period. Data reviewed suggest that practitioners may consider omitting leisure items as controls or including such items strategically based on the accumulation of assessment information.     

Contact with maternal parent and siblings affects hunting behavior,learning, and central nervous system development in spiderlings of <Emphasis Type="Italic">Hogna carolinensis</Emphasis> (Araeneae: Lycosidae)

The purpose of this study was to determine the effects of early experience (rearing conditions) on the central nervous system (CNS) and behavior of spiderlings of Hogna carolinensis (Lycosidae). We were interested in whether or not spiderlings that were allowed to remain in contact with their maternal parent and siblings (enriched condition, EC) would exhibit differences in CNS development or subsequent behavior when compared with those reared in isolation (impoverished condition, IC). Spiderlings emerged from their egg sacs and climbed onto the dorsal surface of their mother's abdomen where they remained until their yolk supply was depleted (5 days). They dispersed on day 6 after emergence. We compared the ability of 16-day-old EC and IC spiderlings to capture prey in a linear runway and to learn a complex maze (spatial learning). We also compared certain aspects of CNS development (brain weight, total number of brain cells, volume of central body and protocerebral neuropil) in EC and IC spiderlings. Results indicated that EC subjects are more efficient at capturing moving prey (crickets) and exhibited improved performance (significantly fewer blind alley errors) in the maze. The volume of the protocerebral neuropil in 6-day-old EC animals increased 30% over a 5-day period after emergence as compared to IC animals of the same age. The volume of the central body of EC animals increased 34.8% over the same time period. On day 6 after emergence, the weight of the protocerebrum was significantly greater in EC versus IC subjects. There were no significant effects of rearing condition (EC vs IC) or age (1- and 6-day-old spiderlings) on the total number of nerve cells in the protocerebrum, suggesting that the difference in protocerebral weight was due primarily to differences in supporting glial tissues and neuropil matrix. In conclusion, the data suggest that early contact with the maternal parent and siblings is of vital importance to CNS development in lycosid spiderlings and can influence the capacity for spatial learning as well as the ability to capture prey. Electronic Publication