Deafness and mother–child interaction: Scaffolded instruction and the learning of problem-solving skills

This study examines the effects of maternal teaching style on the developing problem-solving abilities of deaf and hearing pre-school children. Mothers and children from three matched groups, hearing mother-deaf child, hearing mother-hearing child, and deaf mother-deaf child, were videotaped while the mother instructed the child on a block construction task and again when the child attempted the task independently. Dependent measures were maternal instructional style and child performance. The mothers in the deaf mother-deaf child and hearing mother-hearing child dyads used appropriate scaffolding behaviour and their children were more likely to exhibit adept and independent problem-solving abilities than the deaf children of hearing mothers. The findings of this study support Vygotsky's notion of the ‘zone of proximal development’ and the concept of adult scaffolding of children's learning.     

灵感及其实质

本文探讨了灵感这种特殊的心理现象 ,概括了灵感的四个特征。作者认为灵感是问题解决过程中意识和无意识认知活动交互作用的结果     

Cognitive processes that underlie mathematical precociousness in young children

The working memory (WM) processes that underlie young children's (ages 6-8 years) mathematical precociousness were examined. A battery of tests that assessed components of WM (phonological loop, visual-spatial sketch pad, and central executive), naming speed, random generation, and fluency was administered to mathematically precocious and average-achieving children. The results showed that (a) precocious children performed better on executive processing, inhibition, and naming speed tasks than did average-achieving children, although the two groups were statistically comparable on measures of the phonological loop and visual-spatial sketch pad, and (b) the executive component of WM predicted mathematical accuracy independent of chronological age, reading, inhibition, and naming speed. The results support the notion that the executive system is an important predictor of children's mathematical precociousness and that this system can operate independent of individual differences in the phonological loop, inhibition, and reading in predicting mathematical accuracy.     

Stability and change in children's division strategies

Age-related changes in children's performance on simple division problems (e.g., 6/2, 72/9) were investigated by asking children in Grades 4 through 7 to solve 32 simple division problems. Differences in performance were found across grade, with younger children performing more slowly and less accurately than older children. Problem size effects were also found in that children were faster and more accurate on small problems than on large problems. Two strategies changed across age, with children in Grade 4 relying heavily on the strategy of "addition" (adding the divisor until the dividend was reached) to solve the problems and children in Grades 5 through 7 relying primarily on the strategy of "multiplication" (recasting the division problem as a multiplication problem) to solve the problems. Surprisingly, the frequency of direct retrieval (retrieving the answer directly from memory) did not increase across grade and never became the dominant strategy of choice. Reasons for why retrieval use remains infrequent and age invariant are discussed. Overall, the results suggest that division is a unique operation and that the continued study of division may have implications for further understanding of how procedural and conceptual knowledge of arithmetic develops.     

数学学习不良的研究及趋势

认知心理学、神经心理学的研究发现了数学学习不良(MD)儿童的3种基本算术技能障碍:语义记忆型MD、程序型MD、视觉空间型MD,并对它们的机制和特征做了考察.近年来对MD儿童较高级数学问题解决的研究呈现如下特点:参与到该研究的领域很多;研究所涉及的认知和非认知因素增多;教学干预研究大量出现.目前MD研究在辨别MD儿童、缺陷的概念以及神经心理学解释上面临挑战.因此该研究领域的趋势是从发展的、整体的视角来考察影响MD的各种因素,并注意各种方法的革新和结合.     

What Have Psychologists (And Others) Discovered About the Process of Scientific Discovery?

We describe four major approaches to the study of science–historical accounts of scientific discoveries, psychological experiments with nonscientists working on tasks related to scientific discoveries, direct observation of ongoing scientific laboratories, and computational modeling of scientific discovery processes–by viewing them through the lens of the theory of human problem solving. We compare and contrast the different approaches, indicate their complementarities, and provide examples from each approach that converge on a set of principles of scientific discovery.     

高中生解决化学实验问题的心理过程及其影响因素的进一步研究

对中学化学实验问题解决心理机制的前期研究的基础上,本研究进一步采用活动任务分析、心理模拟、现场实验活动观测、学生自我反思问卷调查,以及定量统计相结合的研究方法,对22名高三优秀学生解决化学实验问题的心理活动及其影响因素进行了较深入的探查,对了解我国高中生化学实验问题解决的能力和水平特点,以及如何改革中学化学实验教学具有重要启示.     

A computational model of frontal lobe dysfunction: working memory and the Tower of Hanoi task

A symbolic computer model, employing the perceptual strategy, is presented for solving Tower of Hanoi problems. The model is calibrated—in terms of the number of problems solved, time taken, and number of moves made—to the performance of 20 normal subjects. It is then "lesioned" by increasing the decay rate of elements in working memory to model the performance of 20 patients with lesions to the prefrontal cortex. The model captures both the main effects of subject groups (patients and normal controls) performance, and the subject groups (patients and normal controls) by problem difficulty interactions. This leads us to support the working memory hypothesis of frontal lobe functions, but for a narrow range of problems.     

The relationship between social problem‐solving and bullying behaviour among male and female adult prisoners

The association between social problem solving and bullying behaviour among adult male and female prisoners is presented. A total of 210 male and 196 female prisoners were categorised into four groups: pure bullies, pure victims, bully/victims, and those not involved in bullying or victimisation. Prisoners completed a questionnaire that presented them with different bullying scenarios and were asked to suggest ways of dealing with each. Female bully/victims produced significantly more solutions in response to theft‐related bullying than male bully/victims. There were no further significant group or gender differences in the number of solutions generated. The bully group favoured aggressive responses for all scenarios. Males reported more aggressive responses than females. The results are discussed with reference to the environment in which the social problem solving is taking place and highlights the importance of distinguishing between the different groups involved in bullying. Aggr. Behav. 27:297–312, 2001. © 2001 Wiley‐Liss, Inc.