"是-应该"问题及其解答

休谟提出如何从“是”推出“应该”,亦即如何从事实判断推出价值判断的问题。本文以该问题为线索,评述和澄清休谟道德哲学的主要观点,并对与此问题密切相关的“囚徒困境”作了探讨。在此基础上,提出一种新的解答,即：“是一应该”问题是不能彻底解决的,在这个意义上,休谟的“是一应该”论题是正确的。但是,在另一种意义上,“是一应该”问题是可以解决的,即对于那些已经把长远利益作为追求目标的人而言是如此。因为对他们来说,追求长远利益已经是一个事实,因而必须考虑与他人或社会的合作,这使他们原有的同情心得到加强,从而产生名誉感和自尊心,进而达到正义和仁慈的德行。这样便从追求长远利益的“是”得出正义和仁慈的“应该”。     

Automatic recognition of eye blinking in spontaneously occurring behavior

Previous researchin automatic facial expression recognition has been limited to recognition of gross expression categories (e.g., joy or anger) in posed facial behavior under well-controlled conditions (e.g., frontal pose and minimal out-of-plane head motion). We have developed a system that detects a discrete and important facial action (e.g., eye blinking) in spontaneously occurring facial behavior that has been measured with a nonfrontal pose, moderate out-of-plane head motion, and occlusion. The system recovers three-dimensional motion parameters, stabilizes facial regions, extracts motion and appearance information, and recognizes discrete facial actions in spontaneous facial behavior. We tested the system in video data from a two-person interview. The 10 subjects were ethnically diverse, action units occurred during speech, and out-of-plane motion and occlusion from head motion and glasses were common. The video data were originally collected to answer substantive questions in psychology and represent a substantial challenge to automated action unit recognition. In analysis of blinks, the system achieved 98% accuracy.     

抑制控制在类比映射发展中的作用:认知负荷的影响

本研究采用负启动范式,设置不同的认知负荷任务,探究抑制控制在儿童和成人类比映射中的作用。实验一中,31名7岁儿童、33名10岁儿童和34名成人完成高认知负荷的相对大小类比映射的负启动任务。结果表明,所有群体均出现负启动效应,且负启动效应随年龄增长而减小。实验二中,30名7岁儿童、30名10岁儿童和32名成人完成低认知负荷的相对大小类比映射的负启动任务。结果表明,所有群体均出现负启动效应,但负启动效应无显著年龄差异。本研究的结果揭示了抑制控制和认知负荷在类比映射发展中的重要作用。     

Defensive pessimism and precautionary action during the COVID pandemic

The purpose of this research was to test, in the context of the COVID-19 pandemic, the hypothesis that individuals who use defensive pessimism as a strategy to manage anxiety are likely to act to prevent or mitigate negative outcomes. Across three crowd-sourced samples (Total N = 1416), defensive pessimism was correlated with self-reports of more precautionary behavior (Studies 1, 2, & 3) and fewer COVID-positive results (Study 3).     

词干补笔与速示器辨认的起动效应保持过程的比较

本文报告了两项关于起动效应(priming effects)保持过程的实验研究结果:1.汉字的词干补笔的起动效应7天后有显著下降。2.汉字的速亦器辨认的起动效应7天前后无显著差别。这些结果倾向于支持这样的观点:补笔可能性大小是影响起动效应保持过程的一个重要因素。     

言语指导与幼儿运动控制发展的实验研究

本文通过实验研究初步探讨了自我控制发展的基本内容之一——幼儿运动控制能力的发展及不同言语指导条件对幼儿运动控制的影响。所得结果认为:幼儿运动控制能力在不断进步。不同言语指导对调节幼儿运动控制的效力是不同的。在本实验条件下,对3岁11个月至6岁4个月的儿童来说,成人在儿童活动过程中进行的即时言语指导对儿童运动控制水平的调节最具影响力,但随年龄增长,其作用力的提高不显著。幼儿的自我言语指导作用迅速增长,但对运动控制的影响力还没有达到成人即时言语指导的水平。本实验中没有发现显著的男女差异。 本文建议,早期的幼儿教育应重视运动控制能力的培养。通过提高幼儿自我言语指导能力达到锻炼幼儿自我控制的目的。     

Influence of cue word perceptual information on metamemory accuracy in judgement of learning

Previous studies have suggested that perceptual information regarding to-be-remembered words in the study phase affects the accuracy of judgement of learning (JOL). However, few have investigated whether the perceptual information in the JOL phase influences JOL accuracy. This study examined the influence of cue word perceptual information in the JOL phase on immediate and delayed JOL accuracy through changes in cue word font size. In Experiment 1, large-cue word pairs had significantly higher mean JOL magnitude than small-cue word pairs in immediate JOLs and higher relative accuracy than small-cue pairs in delayed JOLs, but font size had no influence on recall performance. Experiment 2 increased the JOL time, and mean JOL magnitude did not reliably differ for large-cue compared with small-cue pairs in immediate JOLs. However, the influence on relative accuracy still existed in delayed JOLs. Experiment 3 increased the familiarity of small-cue words in the delayed JOL phase by adding a lexical decision task. The results indicated that cue word font size no longer affected relative accuracy in delayed JOLs. The three experiments in our study indicated that the perceptual information regarding cue words in the JOL phase affects immediate and delayed JOLs in different ways.     

封闭性知觉在大范围优先性中的特殊性

本文研究当封闭性作为被试分辨的图形性质时,空间位置不确定性和视野位置对大范围优先性有何影响。实验发现：（１）无论复合刺激呈现在视野的中央或外周．分辨复合刺激的整体性质的反应时（ＲＴ）比分辨局部性质的ＲＴ短,整体性质对分辨局部性质的反应有较强的干扰作用。相反,局部性质对分辨整体性质的反应的影响较小;（２）刺激位置的不确定对大范围优先性没有显著影响;（３）与周边刺激相比,分辨视野中央的复合刺激的ＲＴ较短,但整体性质的ＲＴ优势和对局部性质的干扰作用,不受刺激在视野中的位置的影响。这些实验结果揭示了封闭性知觉在大范围优先性中的特殊性。     

加压素对记忆巩固过程作用的研究 Ⅰ.精氨酸加压素(AVP)对大鼠记忆巩固过程的易化作用及脑内游离氨基酸含量的变化

本文研究了精氨酸加压素易化记忆巩固过程的作用,测定了这一作用过程中脑内15种游离氨基酸含量的变化。 1.第三天建立实验前1小时皮下注射AVP(2μg/只)显著地延缓了大鼠主动逃避条件反应的消退过程。 2.给予AVP的动物在建立期皮层视区和海马两脑区的GABA(γ-氨基丁酸)含量及海马的异亮氨酸含量下降。在保持期两脑区的苏氨酸含量下降,赖氨酸含量上升,海马的谷氨酸含量下降,但两脑区的GABA含量都没有显著变化。 3.电击应激反应的实验结果表明,给予AVP的动物海马的GABA含量及皮层视区苯丙氨酸含量下降。单独注射AVP后1小时,两脑区的天冬氨酸含量下降。AVP注射后48小时,脑内各种氨基酸含量都没有明显变化。     

氦-氖激光对大鼠躲避条件反应的影响与纹状体神经介质的变化

用54只大鼠为材料,观察了以光导纤维导入脑内的氦-氖激光对其躲避条件反射(CAR)形成的影响和六种神经介质含量的变化。结果表明,四组动物中,只有氦-氖激光照射尾核的一组动物的学习行为指标(CAR阳性率、CAR反应次数)显著优于手术对照组,同时脑纹状体内去甲肾上腺素(NE)和多巴胺(DA)显著增高,而5-羟色胺(5-HT)降低,这是该组动物的特异性脑化学改变。