基于自我参照编码的复合反应范式：有效鉴别有罪者和无罪知情者

隐藏信息测试在司法实践中应用受限的主要原因是容易将知道犯罪相关信息的无罪知情者误判为有罪者, 因此, 需探索有效区分有罪者和无罪知情者、有罪者和无罪不知情者的测谎技术。复合反应范式(complex trial protocol, CTP)是一种能有效抵抗反测谎的隐藏信息测试, 但尚未成功用于鉴别有罪者和无罪知情者。本研究设计了可同时测量EPN和P300的基于自我参照编码的CTP, 每个试次的第一部分随机呈现探测刺激或无关刺激, 第二部分随机呈现目标刺激(自己姓名)或非目标刺激(他人姓名), 要求被试在两个部分看到刺激时均做“与我有关”和“与我无关”的反应。结果表明, 基于自我参照编码的CTP能有效区分有罪者和无罪知情者, EPN区分有罪者和无罪知情者的鉴别力优于P300, P300区分有罪者和无罪不知情者的鉴别力优于EPN。     

认知负荷与编码方式对前瞻记忆及其成分的影响

实验1探究认知负荷（高、低）与编码方式（标准、书写、执行意向）对前瞻记忆的影响,实验2进一步探究其对前瞻记忆两种成分的影响。实验1显示执行意向与书写编码的正确率高于标准编码,而前二者无差异;低负荷的前瞻记忆表现好于高负荷。实验2显示执行意向与书写编码的前瞻成分正确率高于标准编码,而前二者无差异;低负荷的前瞻成分表现好于高负荷;不同认知负荷与编码方式均对回溯成分无影响。结果表明：在意向内容相对简单的情况下,执行意向与书写编码对前瞻记忆的促进作用主要表现在促进前瞻成分的提取,低负荷比高负荷有利于前瞻记忆的成功执行,主要体现在前瞻成分成功率更高。     

Gesturing helps memory encoding in aMCI

Encoding in episodic memory is a step often impaired in patients with amnestic Mild Cognitive Impairment (aMCI). However, procedural memory processes are still relatively preserved. In line with previous research on the enactment effect, we investigated the potential benefit of encoding words combined with imitative gestures on episodic memory. Based on the Grober and Buschke’s free/cued recall procedure, we developed the Symbiosis test in which 13 patients with aMCI and 16 healthy elderly participants learned 32 words belonging to 16 different semantic categories either in a verbal encoding (A) or a bimodal (B; verbal and motor imitation) condition, using a blocked ABBA/BAAB procedure. Overall, memory retrieval was better in healthy participants than in patients with aMCI, and better for cued retrieval in the bimodal encoding (gesture cues) than the verbal encoding (category cues) condition, but there was no interaction effect between group and encoding conditions. These results show that performing concomitant gestures can enhance cued episodic memory retrieval in patients with aMCI and in healthy elderly controls. The Symbiosis test broadens the scope of the enactment effect, from action phrases to isolated words learning in patients with aMCI. Future work should investigate how bimodal encoding provides novel perspectives for memory rehabilitation in patients with aMCI.     

Sex-contingent face aftereffects depend on perceptual category rather than structural encoding

Many studies have used visual adaptation to investigate how recent experience with faces influences perception. While faces similar to those seen during adaptation phases are typically perceived as more 'normal' after adaptation, it is possible to induce aftereffects in one direction for one category (e.g. female) and simultaneously induce aftereffects in the opposite direction for another category (e.g. male). Such aftereffects could reflect 'category-contingent' adaptation of neurons selective for perceptual category (e.g. male or female) or 'structure-contingent' adaptation of lower-level neurons coding the physical characteristics of different face patterns. We compared these explanations by testing for simultaneous opposite after effects following adaptation to (a) two groups of faces from distinct sex categories (male and female) or (b) two groups of faces from the same sex category (female and hyper-female) where the structural differences between the female and hyper-female groups were mathematically identical to those between male and female groups. We were able to induce opposite aftereffects following adaptation between sex categories but not after adaptation within a sex category. These findings indicate the involvement of neurons coding perceptual category in sex-contingent face aftereffects and cannot be explained by neurons coding only the physical aspects of face patterns.     

二年级小学生“记”“忆”策略的微观发生研究

采用微观发生法,以33名小学二年级学生为被试,以记忆书面语词的分类材料为任务,对儿童记忆过程中"记"、"忆"策略的不同发展规律进行了5个期间的测查.结果发现:(1)分类记忆策略的发展既有突变过程也有渐变过程:分类记策略有生成缺陷,表现为训练后的突然变化;分类忆策略则是一个可以自发形成的渐变过程,如果加以适当的训练也会发生突然的增长.(2)在材料熟悉度较低的情况下,会使少量儿童产生分类记、忆策略使用缺陷现象.     

汉语言语产生中语音、字形启动的位置效应

以起始掩蔽启动效应(the Masked Onset Priming Effect, 简称MOP效应)为研究背景, 通过3个实验, 考察了语音和字形在MOP效应产生中的作用, 以及在汉语单字词产生中语音、字形启动的位置效应。实验1表明, 在汉语单字词的产生中, 语音启动的位置效应显著, 声母启动的效应量显著大于韵母启动的效应量, 与拼音文字研究得到的MOP效应类似, 说明在MOP效应中至少包含有语音效应。汉字单字词语音编码的最小单位是音位, 而且具有从左到右序列加工的特点, 支持言语产生的“音节临时形成论”。实验2表明, 与目标字左、右部件相同的启动刺激均能促进掩蔽启动范式中的命名反应, 被试对与启动字的右部件相同的目标字的反应显著快于对与启动字的左部件相同的目标字的反应, 与起始掩蔽启动效应的假设相反, 说明在MOP效应中不包含有字形的作用, 却发现了汉字单字词特有的命名的字形位置效应：右部件启动的效应量大于左部件启动的效应量。实验3采用图-词干扰范式对汉字左、右部件的启动效应做了进一步的探讨, 仍然发现汉字右部件启动的效应量显著大于汉字左部件启动的效应量。整个研究表明, MOP效应是单纯的语音效应, 并不包含有字形的作用; MOP效应产生于言语产生中的语音编码阶段, 支持言语计划理论的观点。     

小学儿童空间物体位置编码(I)

采用找物范式研究小学 7、9、11岁儿童利用点与点之间的关系对目标物位置进行编码的认知发展。结果表明 :两点距离编码和三点共线编码认知成绩的年龄效应显著 ,9岁组和 11岁组儿童的认知成绩显著好于 7岁组儿童的认知成绩。两个不同实验任务对儿童认知成绩的影响不同 ,7岁组儿童两点距离编码认知成绩显著好于三点共线编码认知成绩 ,9岁组和 11岁组两个任务的认知成绩差异不显著。提供编码线索后 ,认知成绩有了较大的改善。     

How children block learning from ignorant speakers

Preschool children typically do not learn words from ignorant or unreliable speakers. Here, we examined the mechanism by which these learning failures occur by modifying the comprehension test procedure that measures word learning. Following lexical training by a knowledgeable or ignorant speaker, 48 preschool-aged children were asked either a standard comprehension test question (i.e., “Which one is the blicket”) or a question about the labeling episode (i.e., “Which one did I say is the blicket”). Immediately after training, children chose the object labeled by an ignorant speaker when asked the episode question, but not when asked the semantic question. However, the advantage for episode questions disappeared when the same children were asked after a brief delay. These findings show that children encode their experiences with ignorant speakers, but do not form semantic representations on the basis of those experiences.     

大学生偶发和外显编码中的自我参照效应

在自我参照范式中加入偶发编码加工方式,并采用R/K判断范式考察中国大学生在偶发编码和外显编码方式中的记忆成绩.结果发现:在R指标上,偶发编码方式和外显编码方式中均出现了自我参照效应和母亲参照效应;参照自我加工的记忆成绩显著高于参照母亲加工的记忆成绩;外显编码方式中的记忆成绩显著高于偶发编码方式的记忆成绩.结果提示,当需提高对信息的记忆成绩时,只要呈现自我线索就足够了,并不需要对其进行外显编码加工.     

注意资源、学习方式与年龄因素对协作抑制的影响

本研究在前人研究的基础上,试图探讨不同编码因素对协作抑制效应的制约作用,从协作抑制角度为挖掘集体记忆的作用机制提供证据。实验1结果发现,集中注意条件下,出现协作抑制;分配注意条件下,协作抑制消失。说明学习时注意资源的投入程度,对协作抑制有影响。实验2结果发现不同的学习方式对协作抑制的影响在不同年龄被试身上表现不同。本研究将视角聚焦于编码因素,研究结果证实,协作抑制受到不同编码因素的制约,此外,本结果亦为协作抑制的提取策略破坏假说提供了新的证据。