3～5岁儿童表面与结构相似性类比推理的实验研究

采用经典类比推理问题对3~5岁儿童表面相似性与结构相似性类比推理能力进行了实验研究。结果发现:(1)表面相似性与结构相似性对儿童解决类比问题的影响不同。一般来说,前者更有利于3~5岁儿童类比问题的解决;(2)儿童解决表面相似性与结构相似性类比问题的能力随年龄增长而发展,但发展趋势不同。在表面相似性问题方面,4岁以前发展较慢,而4岁以后的发展较快;在结构相似性问题方面,4岁以前发展较快,而4岁以后的发展较慢。4岁是儿童解决类比推理问题能力的转折点;(3)在本实验条件下,工作记忆负荷对儿童解决表面相似性类比问题与结构相似性类比问题的影响不显著;(4)类比映射关系提示能促进儿童解决两类类比问题,但对不同年龄儿童的作用是非线性的。     

源问题呈现方式对认知负荷及类比推理的影响

采用2×2×2匹配分组实验设计,以176名初中三年级学生为被试,探讨了源问题呈现方式对中学生认知负荷及类比推理的影响。结果表明：（1）归纳、源问题内容相似性和源问题结构清晰性对认知负荷均有显著影响。（2）归纳和源问题结构清晰性对类比推理均有显著影响,且归纳、源问题内容相似性和源问题结构清晰性三者之间在对类比推理的影响上存在交互作用。     

相似性、相似性组合及元认知监控对问题类比推理的影响研究

以改编Holyoak等设计的“汇聚问题”为实验材料,同时自编元认知监控问卷测试被试的元认知监控水平,考察相似性的不同水平,源问题个数,两个源问题情境下源问题的组合方式以及被试的元认知监控水平对类比迁移的影响。结果表明,一个源问题呈现情境下,源、靶问题不同的相似性水平差异显著,表面相似性显著促进类比迁移;两个源问题呈现情境下,源问题的不同组合方式差异显著;无论是呈现一个源问题,还是呈现两个源问题,元认知监控差异均显著,类比迁移主要是控制性加工;源问题个数差异显著。     

大学生的气味词分类—— 基于语义相似性和知觉相似性的探讨

通过两个实验, 考察了大学生对60个气味词的基于语义相似性和基于知觉相似性的分类, 并运用多维标度法和聚类分析法进行分析。结果发现：(1)在语义水平上, 大学生根据发出气味的物体的功能(与食物有关/与食物无关)和语义性质(人造物/自然物)对气味词分类; (2)在表象水平上, 大学生根据气味的感觉情调(气味的愉悦度)和强度(浓度)对气味词分类; (3)气味词具有粗略的语义特征, 原型在气味词概念组织中具有重要作用; (4)男、女大学生对于气味词的分类基本一致, 但在具体项目上存在着性别差异。     

时间压力和相似性对类比推理直觉加工的影响

通过两个实验探讨了时间压力对类比推理的直觉加工的影响。实验1采用三因素混合实验设计,以48名大学生为被试,在不同时间压力条件下对不同相似性言语类比推理题进行喜好度判断和类比推理逻辑判断。实验2是在实验1的基础上用图形类比推理题代替语义类比推理题,以56名大学生为被试。结果发现:(1)时间压力下,对跨领域言语类比推理的直觉加工效应显著高于逻辑加工效应;(2)时间压力下,低难度图形类比推理题的直觉加工效应显著高于逻辑加工效应。无时间压力条件下,图形类比推理的逻辑加工效应优势明显;(3)时间压力对类比推理的直觉加工和逻辑加工均有影响     

表面相似性对数量关系和相对大小关系理解的影响

研究采用数量关系匹配任务和相对大小关系匹配任务,通过高表面相似性、低表面相似性和交叉映射三种实验条件,探讨表面相似性对儿童和成人数量与相对大小关系理解的影响。研究一对37名4岁儿童进行三次每次间隔半年的追踪测查,结果表明4~5岁间儿童理解数量关系和相对大小关系的水平有显著提高;4岁儿童对数量关系的理解受到表面相似性的影响,4~5岁儿童对相对大小关系的理解受到表面相似性的影响。研究二探究44名成人数量和相对大小关系理解的特点,结果发现,成人完成两种关系匹配任务时也受到表面相似性的影响。     

解释水平视角下的自己-他人决策差异

研究基于解释水平理论, 考察自己决策和为他人提供建议是否存在认知和偏好上的差异。实验一采用2(自己决策/为他人建议)×2(价值：高/低)×2(可行性：高/低)被试间设计, 165名被试代表自己或他人评价选项的吸引力。实验二采用3×2混合设计, 81名被试代表自己、相似或不相似他人, 为“高价值-低可行”和“低价值-高可行”两选项出价。结果支持了“自己-他人决策差异”：自己决策比为他人提建议在更大程度上受可行性高低的影响, 更为偏爱可行性高的选项; 人际相似性能在一定程度上缩小上述差异。     

大学生学科问题类比迁移的实验研究

考察了单个和两个源问题条件下大学生学科问题类比迁移的情况。实验1考察表面特性对学科问题迁移成绩的影响,以及个体的时间控制、解题策略。实验2考察两个源问题表面相似关系和思路归纳关系对迁移成绩的影响。结果表明：1)表面相似性对迁移成绩影响显著,同领域学科问题之间更容易迁移;2)依据表面和依据结构来激活源问题都是有效策略．源问题学习时间与迁移效果之间不存在显著关系;3)思路归纳对迁移成绩影响显著。     

学习条件和样例相似性对类别学习元认知监控的影响

采用“学习-迁移”范式 ,探讨了学习条件和样例相似性对类别学习元认知监控的影响。实验选取虚构动物材料,采用2（学习条件：规则、无规则）×3（样例相似性：低、中、高）×2（匹配类型：正向匹配、反向匹配）混合实验设计,结果显示,在规则条件下,高样例相似性组正向匹配新项目的分类正确率显著高于反向匹配新项目的分类正确率;在无规则条件下,样例相似性越高,正向匹配新项目的分类准确率越高,所有项目的信心值也越高。这表明,规则和样例相似性是类别学习元认知判断的线索;在同一任务中,分类会涉及基于规则和基于相似性两个过程。     

亲子间家庭功能知觉相似性的特点及其与青少年自尊的关系

采用家庭功能评价量表(FAI),Rosenberg自尊量表,对北京和西安4所普通中学的1317名初高中生及其父母进行调查。结果发现:(1)亲子间的家庭功能知觉存在中等程度的相似性,青少年与父亲和青少年与母亲间知觉的相似性无显著差异;(2)亲子间家庭功能知觉相似性的性别和年级差异显著,女孩与父母间知觉的相似性高于男孩,高一年级与父母知觉的相似性高于其他三个年级;家庭功能不同维度知觉相似性的表现不同;(3)不同性别和不同知觉相似性水平的青少年自尊得分差异显著;低相似性组个体的自尊分数显著低于高相似性组和一般组;亲子间在整体家庭功能和父母关注维度的相似性可显著预测青少年自尊。     

Memory loss versus memory distortion: The role of encoding and retrieval deficits in Korsakoff patients’ false memories

Recent studies with the Deese/Roediger-McDermott (DRM) paradigm have revealed that Korsakoff patients show reduced levels of false recognition and different patterns of false recall compared to controls. The present experiment examined whether this could be attributed to an encoding deficit, or rather to problems with explicitly retrieving thematic information at test. In a variation on the DRM paradigm, both patients and controls were presented with associative as well as categorised word lists, with the order of recall and recognition tests manipulated between-subjects. The results point to an important role for the automatic/controlled retrieval distinction: Korsakoff patients’ false memory was only diminished compared to controls’ when automatic or short-term memory processes could not be used to fulfil the task at hand. Hence, the patients’ explicit retrieval deficit appears to be crucial in explaining past and present data. Results are discussed in terms of fuzzy-trace and activation-monitoring theories.     

Exploring the enactment effect from an information processing view: What can we learn from serial position analyses?

The focus of the present article was to analyze processes that determine the enactment and age effect in a multi-trial free recall paradigm by looking at the serial position effects. In an experimental study (see Schatz et al 2010), the performance-enhancing effect of enactive encoding and repeated learning was tested with older and younger participants. As expected, there was a steady improvement of memory performance as a function of repeated learning regardless of age. In addition, enactive encoding led to a better memory performance than verbal encoding in both age groups. Furthermore, younger adults outperformed the elderly regardless of type of encoding. Analyses in the present article show that encoding by enacting seems to profit especially from remembering the last items of a presented list. Regarding age differences, younger outperformed older participants in nearly all item positions. The performance enhancement after task repetition is due to a higher amount of recalled items in the middle positions in a subject performed task (SPT) and a verbal task (VT) as well as the last positions of a learned list in VT.     

编码方式对陌生字形记忆的影响

采用学习-再认范式,分别以韩字、英文假词为实验材料,考察了编码方式对陌生字形记忆的影响。在学习阶段,通过随机呈现整体和部分探测刺激,引导被试分别以整体编码和部分编码方式学习陌生字形,并在学习结束后一小时进行再认记忆测试。结果发现,无论以韩字还是以英文假词为材料,部分编码条件的记忆成绩均显著好于整体编码。该结果说明部分编码相比于整体编码能促进陌生字形记忆,并且这种优势效应具有跨文字系统的一致性。     

Attention modulates sensory suppression during back movements

Tactile perception is often impaired during movement. The present study investigated whether such sensory suppression also occurs during back movements, and whether this would be modulated by attention. In two tactile detection experiments, participants simultaneously engaged in a movement task, in which they executed a back-bending movement, and a perceptual task, consisting of the detection of subtle tactile stimuli administered to their upper or lower back. The focus of participants’ attention was manipulated by raising the probability that one of the back locations would be stimulated. The results revealed that tactile detection was suppressed during the execution of the back movements. Furthermore, the results of Experiment 2 revealed that when the stimulus was always presented to the attended location, tactile suppression was substantially reduced, suggesting that sensory suppression can be modulated by top-down attentional processes. The potential of this paradigm for studying tactile information processing in clinical populations is discussed.     

Enhanced encoding of the co-actor's target stimuli during a shared non-motor task

Task co-representation has been proposed to rely on the motor brain areas’ capacity to represent others’ action plans similarly to one's own. The joint memory (JM) effect suggests that working in parallel with others influences the depth of incidental encoding: Other-relevant items are better encoded than non-task-relevant items. Using this paradigm, we investigated whether task co-representation could also emerge for non-motor tasks. In Experiment 1, we found enhanced recall performance to stimuli relevant to the co-actor also when the participants’ task required non-motor responses (counting the target words) instead of key-presses. This suggests that the JM effect did not depend on simulating the co-actor's motor responses. In Experiment 2, direct visual access to the co-actor and his actions was found to be unnecessary to evoke the JM effect in case of the non-motor, but not in case of the motor task. Prior knowledge of the co-actor's target category is sufficient to evoke deeper incidental encoding. Overall, these findings indicate that the capacity of task co-representation extends beyond the realm of motor tasks: Simulating the other's motor actions is not necessary in this process.     

An exploration of economic reasoning in hoarding disorder patients

Current models of hoarding disorder (HD) emphasize problems of decision-making. Evidence for neuropsychological impairment in HD, however, has been mixed. The present study examined whether HD patients show problems of economic reasoning that could be associated with decision-making problems. Forty-two HD patients, 29 obsessive-compulsive disorder (OCD) patients, and 36 healthy control participants completed the Iowa gambling task (IGT), a computerized card playing game that assesses participants' ability to learn and utilize a rule of sacrificing short-term gain for long-term gain, and a cognitive dissonance reduction task that measured changes in preference for items (art prints) after selecting or rejecting them. Results showed no deficits on the IGT for HD participants, and no difference in dissonance reduction results after selecting or rejecting items on the dissonance reduction task. Furthermore, performance on these two tasks was unrelated to hoarding symptom severity or self-reported indecisiveness. It is suggested that the problems of cognitive processing in HD patients may be largely related to as-yet understudied processes, including idiosyncratic categorization problems for personally-owned items as well as other aspects of economic reasoning.     

The belief-bias effect in the production and evaluation of logical conclusions

In this study, we examined whether adult subjects' beliefs regarding the empirical truth of a conclusion affected their production as well as their evaluation of a logical conclusion in a reasoning task. In addition, the relation between the ability to resolve an abstract reasoning problem correctly and the effect of belief-bias was examined. The subjects were given one of four paper-and-pencil reasoning tasks, two of them using an evaluation paradigm, and two of them using a production paradigm. Each paradigm comprised either neutral problems or belief problems. The neutral problems were constructed to be as similar as possible to the belief problems, in order to control for extraneous factors. All four tasks also included an abstract reasoning problem. The results indicate a significant belief-bias effect for both the evaluation and the production tasks. Qualitative analysis indicated that the belief-bias effect was more pervasive in the production condition. In addition, the belief-bias effect was found to exist independently of the subjects' abstract reasoning ability. The results are discussed with reference to a two-stage model, in which belief is used to resolve uncertainties in inferentially produced conclusions.     

Belief bias and figural bias in syllogistic reasoning

Belief bias is the tendency to be influenced by the believability of the conclusion when attempting to solve a syllogistic reasoning problem. Figural bias is the tendency to be influenced by the order in which the information is presented in the premises when attempting to solve a syllogistic reasoning problem. When studied simultaneously they enable an investigation of whether participants' reasoning on the syllogistic reasoning task is guided by the conclusion (backward reasoning) or the premises (forward reasoning). Experiments 1 and 2 found evidence of belief bias but not figural bias on the syllogistic evaluation task paradigm. Experiments 3 and 4 found evidence of figural bias but not belief bias on the syllogistic production task paradigm. The findings highlight that different task characteristics influence performance dependent upon the nature of task presentation. These findings are discussed in the context of current theories of belief bias in syllogistic reasoning.     

人工语法范式下的无意识知识探析

人工语法范式不仅是内隐学习领域广泛运用的范式,同时也是研究无意识知识的主要方法。文章通过对人工语法范式组成材料中的刺激频率、组块等方面进行深入探讨,不仅使人们对无意识知识有了更全面的认识,而且也有利于对内隐学习获得规则知识的假设提出更确定的回答;并通过对无意识知识的神经机制研究以及考察镜射规则学习过程的脑神经激活状况,获得了规则学习对应更为准确的脑神经活动,推动了人工语法范式下无意识知识的深入研究。