概念和类别研究中基于解释的观点

该文介绍了概念和类别研究中基于解释的观点。和原型观、样例观不同,基于解释的观点强调了三个方面的影响因素,一是知识背景的影响;二是不同的学习任务的影响;三是类别知识的运用的再影响。该文从时问的先后描述了解释观的主要观点及其典型的实验研究。     

汉语假设条件复句的心理表征项目互换效应研究

本文采用句子一图画验证任务(sentence-picture verification task)探讨了汉语假设条件复句的心理表征项目互换效应。结果表明,汉语假设条件复句的项目表达顺序为“结果一假设条件”时,所形成的心理表征中项目发生互换,其结果为“假设条件→结果”。本研究结果初步表明。读者理解汉语假设条件复句是一个按照“假设条件→结果”固定方向进行系列加工的认知过程。     

实体和初级关系（FOR）匹配的分离与结合对故事类比通达的影响

采用移动窗口阅读技术深入探讨实体和初级关系（FOR）匹配的分离与结合对故事类比通达的影响,对表面特征和结构特征在类比通达中的作用进行检验。实验1探讨系统变化目标故事和线索故事之间实体匹配数目与实体和初级关系（FOR）匹配的分离与结合是否影响读线索故事时对目标故事的回想。实验2探讨系统变化目标故事和线索故事之间初级关系（FOR）匹配的数目与实体和初级关系（FOR）匹配的分离与结合是否影响读线索故事时对目标故事的回想。实验3探讨实体和初级关系（FOR）匹配的分离与结合对目标故事的通达是否与高级关系（HOR）的匹配有关。结果表明,实体匹配独立影响通达,实体和初级关系（FOR）分离与结合影响故事类比通达,高级的结构关系（HOR）是实体和初级关系（FOR）影响故事类比通达的必要条件。     

Having the memory of an elephant: long-term retrieval and the use of analogues in problem solving

The authors report 4 experiments exploring long-term analogical transfer from problem solutions in folk tales participants heard during childhood, many years before encountering the target problems. Substantial culture-specific analogical transfer was found when American and Chinese participants' performance was compared on isomorphs of problems solved in European versus Chinese folk tales. There was evidence of transfer even among participants who did not report being reminded of the source tale while solving the target problem. Comparisons of different versions of a target problem indicated that similarity of solution tool affected accessing, mapping, and executing components of problem solving, whereas similarity of goal object had only a moderate effect on accessing. High school students also evidenced greater transfer than did middle school students.     

Schema induction in problem solving: a multidimensional analysis

The present research examined the processes of schema formation in problem solving. In 4 experiments, participants experienced a series of tasks analogous to A. S. Luchins' (1942) water jar problems before attempting to solve isomorphic target problems. Juxtaposing illustrative source instances varying in procedural features along multiple dimensions promoted the construction of a general schema that facilitated solving an isomorphic problem requiring a novel procedure. Exposure to less variant problems led to faster initial learning, but narrower and fixed schemas (mental set), whereas exposure to variant procedures led to slower initial learning, but broader and more flexible schemas. The findings support the dimensional specificity hypothesis: Generalization along 1 dimension facilitates transfer to a target problem differing from the source problems in that dimension.     

Birds of a feather and birds flocking together: physical versus behavioral cues may lead to trait- versus goal-based group perception

Entitativity perception refers to the perception of a collection of individuals as a group. The authors propose 2 perceptual-inferential bases of entitativity perception. First, perceivers would expect a collection of individuals with similar physical traits to possess common psychological traits. Second, perceivers watching a group of individuals engage in concerted behavior would infer that these individuals have common goals. Thus, both similarity in physical traits (e.g., same skin color) and concerted collective behavior (e.g., same movement) would evoke perception of group entitativity. Results from 5 experiments show that same group movement invariably leads to common goal inferences, increased perceived cohesiveness, and increased perceived entitativity. Moreover, same skin color evokes inferences of group traits and increases perceived homogeneity and perceived entitativity but only when skin color is diagnostic of group membership.     

An introduction to Chinese psychology--its historical roots until the present day

In this article the authors review the historical development of Chinese psychology. China's long history as a country immersed in the study of psychological issues is well known and has had an influence on developments in the field of psychology around the world. Modern Chinese psychology, however, was imported from the West and the Soviet Union and has been closely linked with China's social environment and changes of national policy. Today Chinese psychology is still in a preliminary stage. Despite difficulties that may impede its future development, the importance of psychology in the modernization of China has been widely recognized.     

Amphetamine and morphine produce a conditioned taste and place preference in the house musk shrew (Suncus murinus)

Rats have been shown to avoid consuming a flavor, but prefer a location, previously paired with amphetamine or morphine. A series of 4 experiments evaluated the hedonic properties of amphetamine and morphine in the house musk shrew (Suncus murinus), an insectivore that (unlike rats) is capable of vomiting when exposed to toxins. Unlike rats, amphetamine (20 mg/kg) and morphine (20 mg/kg) produced both a conditioned sucrose (0.3 M) and saccharin (0.1%) preference in shrews (administered intraperitoneally), when measured by both a 1- and a 2-bottle test. At the same dose, both drugs also produced a place preference in shrews. These results suggest that the potential of rewarding drugs to produce taste avoidance may vary on the basis of the ability of the species to vomit.     

Equivocations on knowledge systems theory: An actor-oriented critique

Knowledge systems theory, in our view, tends to obscure rather than illuminate an understanding of the fundamentals of knowledge processes in society. This tendency occurs primarily because both the theory, and the methodologies that are derived from it, fail to recognize that knowledge processes are social processes, and thereby that knowledge itself has to be envisaged as a social construction. As a result of this omission, knowledge systems theory and methodology can only deal poorly with issues of power and social conflict, and, at the same time, tend to make use of several inappropriate teleological and reifying notions. According to our view, the understanding of knowledge processes will benefit greatly from a more actor-oriented perspective. In such an approach, emphasis is accorded to human agency and the concept of multiple knowledge networks. Central purposes of actor-oriented methodologies then, are to clarify how actors attempt to create space for their own ‘projects’ and to determine which elements contribute to or impede the successful creation of such space for maneuver. Norman Long is a member of the Department of Rural Sociology of the Tropics and Subtropics at Wageningen Agricultural University, P.O. Box 8130, 6700 EW, Wageningen, The Netherlands. He is known for his work in the sociology of rural development. Magdalena Villarreal recently acquired her M.S. in “Management of Agricultural Knowledge Systems” at Wageningen Agricultural University. She is presently working on a Ph.D. proposal on issues of power, gender, and intervention.     

Aging is associated with increased Weber ratios

To investigate whether age-associated changes in the human taste system are quality-specific, we compared young and elderly subjects’ suprathreshold discrimination abilities for caffeine and sucrose. The method of constant stimuli was used to obtain just noticeable differences and Weber ratios. The elderly generated larger Weber ratios than did the young for both the medium and high concentrations of caffeine, but not for the low concentration. For example, a 74% increase in .005 M caffeine was required to obtain a perceptible difference for the elderly, whereas a 34% increase produced a perceptible difference for the young. The Weber ratios for sucrose did not differ for the two age groups. The results of this study indicate that age-associated changes in the taste system are quality-specific.