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281.
We examined attention shifting in baboons and humans during the learning of visual categories. Within a conditional matching-to-sample
task, participants of the two species sequentially learned two two-feature categories which shared a common feature. Results
showed that humans encoded both features of the initially learned category, but predominantly only the distinctive feature
of the subsequently learned category. Although baboons initially encoded both features of the first category, they ultimately
retained only the distinctive features of each category. Empirical data from the two species were analyzed with the 1996 ADIT
connectionist model of Kruschke. ADIT fits the baboon data when the attentional shift rate is zero, and the human data when
the attentional shift rate is not zero. These empirical and modeling results suggest species differences in learned attention
to visual features.
Received: 30 May 1998 / Accepted after revision: 13 September 1998 相似文献
282.
Jacques Waardenburg 《Islam & Christian-Muslim Relations》1997,8(1):9-26
In treating some critical issues in Muslim‐Christian relations at present and in the near future I would like to say something on the basis of what may be qualified as ‘critical realism’ on the one hand and ‘constructive partnership’ on the other. My purpose here is to identify some issues with which we have to cope when we want to improve relations between Muslims and Christians for times to come. 相似文献
283.
Herman A. Witkin Douglass Price-Williams Mario Bertini Bjrn Christiansen Philip K. Oltman Manuel Ramirez Jacques van Meel 《International journal of psychology》1974,9(1):11-29
This study examined the role of socialization experiences in the development of psychological differentiation. In each of three countries (Holland, Italy, Mexico) two villages were selected as presenting a contrasting picture with regard to degree of emphasis on conformity to family, religious and political authority. It was hypothesized that within the pair of villages in each country children from the village which stressed social conformity would tend to be more field dependent and show other signs of less developed differentiation than children from the village in which social conformity was less emphasized. In each of the six villages approximately 100 children (boys and girls, aged 9–11 and 13–15) were studied. Differentiation was assessed by a battery of tests of field-dependence-independence and the figure-drawing test. In every comparison of mean test scores between pairs of villages, in each of the three countries, children from the village in which social conformity was stressed obtained scores reflecting less differentiated functioning. Village differences were significant for every measure of differentiation in all three countries. Addition alanalyses of the data from the tests of differentiation and other tests used yielded results essentially consistent with findings from previous studies. 相似文献
284.
285.
The usual increase in reaction time which occurs when a reaction stimulus is preceded by one irrelevant stimulus was-reduced 30% by preceding the latter with a second irrelevant stimulus at certain critical intervals between stimuli. The interaction between the irrelevant stimuli, as measured by reaction time, has a different time course than the interaction implicit in tlte “psychological refractory period”. 相似文献
286.
In 2 experiments, an error-detection approach was used to determine whether 3-year-olds' perseverative errors on the postswitch phase of the Dimensional Change Card Sort (DCCS) are due to lack of response control or representational inflexibility. In Experiment 1, 3-, 4-, and 5-year-olds watched a puppet sort perseveratively on the postswitch phase and evaluated its responses. Most 4- and 5-year-olds detected the puppet's perseverative errors, whereas most 3-year-olds failed to do so despite detecting errors on a simpler card sort. Experiment 2 revealed that 3-year-olds who failed to correctly evaluate the puppet's behavior tended to fail their own DCCS. Results imply that perseveration on the DCCS cannot be attributed to difficulty inhibiting prepotent motor responses. Instead, changes in rule use between 3 and 5 years of age are interpreted in terms of the development of representational flexibility. 相似文献
287.
The accumulation of research findings now suggest a significant work stress problem, with implications for worker health, motivation and productivity, that warrants a concerted applied research effort at a local level and a strategy and policy response at a national level. Psychologists need to rethink prevailing paradigms that often separate their research and practice. We argue that a conducive production model that emphasizes action and knowledge, and reciprocal learning between academia, practitioners, and organizations may be the way forward for psychologists to respond effectively to the current work stress problems and other emergent organizational issues. Failure to do so may result in exacerbation of problems related to the psychological and social context of work, a slowed response to increased demands, and an ever decreasing practical utility of the profession. 相似文献
288.
289.
Although many scientists view cloning as a useful procedure for scientific research into early embryo development -- one that cannot currently be used to produce multiple copies of humans -- the popular literature has led some individuals to view it as sinister. To address the concerns of the public, various conceptions of cloning are distinguished and their basis in fact analyzed. The possible uses, benefits, and detriments of both embryo splitting and nuclear transplantation are explained. Once the nature and purposes of cloning are understood, and the distinctive ethical dilemmas created by embryo splitting and nuclear transplantation are sorted out, these procedures should be clinically implemented to assist in vitro fertilization treatment for those who are infertile and to further other therapeutic and investigational efforts in medicine. 相似文献
290.
Jacques Waardenburg 《Islam & Christian-Muslim Relations》1990,1(1):66-88
Three avenues in Islamic studies are distinguished. The humanities study the languages, texts and history of Islam as a civilisation and religion. The main difficulty confronting them is to understand properly the texts studied. Anthropology, sociology and political science constitute the main contribution of the social sciences. Here the main difficulty lies in explaining religious data correctly within their context. In religious studies, the third avenue, the main problem is to interpret correctly the way in which Muslim communities and persons have understood their cultural tradition and the religious elements which belong to it. Focusing on the people's intentions which make Islam a religion rather than a social system or ideology enables Islam to be understood from the perspective of religious studies. 相似文献