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421.
Semantic restrictions on children's passives 总被引:2,自引:0,他引:2
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The present study examined the influence of unstressed prefixes and suffixes upon the location of stress-beats in the production and perception of stressed CVC syllables. Analysis indicates that the addition of an unstressed suffix produces a small stress-beat shift, while the addition of an unstressed prefix produces a much larger shift in the opposite direction. 相似文献
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426.
Effect of lexical status on phonetic categorization 总被引:2,自引:0,他引:2
To investigate the interaction in speech perception between lexical knowledge (in particular, whether a stimulus token makes a word or nonword) and phonetic categorization, sets of [bVC]-[dVC] place-of-articulation continua were constructed so that the endpoint tokens represented word-word, word-nonword, nonword-word, and nonword-nonword combinations. Experiment 1 demonstrated that ambiguous tokens were perceived in favor of the word token and supported the contention that lexical knowledge can affect the process of phonetic categorization. Experiment 2 utilized a reaction time procedure with the same stimuli and demonstrated that the effect of lexical status on phonetic categorization increased with response latency, suggesting that the lexical effect represents a perceptual process that is separate from and follows phonetic categorization. Experiment 3 utilized a different set of [b-d] continua to separate the effects of final consonant contrast and lexical status that were confounded in Experiments 1 and 2. Results demonstrated that both lexical status and contextual contrast separately affected the identification of the initial stop. Data from these three experiments support a perceptual model wherein phonetic categorization can operate separately from higher levels of analysis. 相似文献
427.
One hundred eleven college students participated in this two-session experiment designed to explore the origins of anti-nuclear war activism. In Session 1 participants completed questionnaires assessing a number of background characteristics and attitudes, the most important of which for this study's purpose was a measure of perceived political efficacy in the nuclear realm. One week later both the salience of the nuclear weapons issue and participants' sense of personalized risk were experimentally manipulated in a 2 × 2 × 2 (salience × risk × measured efficacy) design. Dependent measures were a behavioral intentions questionnaire and an actual opportunity to sign a petition which participants did not recognize as part of the experiment. High salience significantly increased both anti-nuclear war behavioral intentions and actual behavior as predicted. Individuals who felt highly efficacious were also significantly more likely to take action than others as predicted. A similar relation between efficacy and behavioral intentions was not found, although a salience by efficacy interaction was. Personalized risk influenced only behavioral intentions. Finally, the relative impact of these three variables and of other background and attitudinal variables measured in the first session was explored using regression techniques. 相似文献
428.
It is well established that requiring a person to respond to a recently ignored object in a visual selection task leads to slower responding (i.e., negative priming). In the present experiment, subjects identified target letters flanked by incompatible distractor letters on prime and probe displays. Prime display distractors appeared as the target letter on one third of subsequent probe displays. We manipulated stimulus strength by means of intensity contrast between letter displays and their background. Displays were presented with either high contrast (white against a black background) or low contrast (dark gray against a black background). The important finding was that negative priming was maximal when prime and probe displays shared the same intensity contrast. These results suggest that greater similarity between prime and probe displays results in improved retrieval of prime display information. The results provide strong support for an episodic retrieval account of negative priming. 相似文献
429.
Roger A. Dixon Diane P. Fox Lee Trevithick Rebecca Brundin 《Journal of Adult Development》1997,4(4):195-208
Collaborative problem solving occurs in situations in which two or more individuals cooperate in appraising, representing,
and solving a variety of cognitive tasks. Collaborative groups are the context for much everyday cognitive activity in adulthood.
Collaboration has been explored as a means through which older adults may maintain high levels of performance, perhaps compensating
for individual-level cognitive and neurological decline. This study explored the effects of collaboration (group size) and
adult age on solving both fixed- and unrestricted-alternatives 20 Questions tasks. Younger (M=24.3 years) and older (M=67.9 years) adults were randomly assigned to one of three homogeneous group size conditions: individuals, dyads, and tetrads.
Results indicated some dissociation between individual-level performance (poorer for older adults) and collaborative performance
(better for older adults). For the fixed-alternatives task, older adults produced more of the relatively inefficient hypothesis-scanning
questions than did younger adults. In contrast, older collaborative groups produced more of the efficient constraint-seeking
questions than hhpothesis-scanning questions, and an amount equivalent to that of younger adults. Overall performance for
the difficult unrestricted-alternatives task was less efficient for both younger and older adults. The roles of task type,
group characteristics, and adult age are discussed. 相似文献
430.
The I?varapratvabhijñākārikā of Utpaladeva with the Author's Vrtti. Critical edition and annotated translation. Serie Orientale Roma LXXI. Raffaele Toreha, 1994, Roma, Istituto Italiano per il Medio ed Estremo Oriente, LIV+ 273 pp., pb L. 110.000
Jung and Eastern Thought: a Dialogue with the Orient. John James Clarke, 1994, London, Routledge, vii +217 pp., £12.99
Abu Yacqub al‐Sijistani: Intellectual Missionary. Paul E. Walker, 1996, London, I. B. Tauris, xv + 132 pp.
Religious Pluralism and Truth: Essays on Cross‐cultural Philosophy of Religion. Edited by Thomas Dean, 1995, Albany, SUNY Press, xi + 271 pp., 0 7914 2123 6 hb, 0 7914 2124 4 pb, $19.95
The Body, Self‐cultivation, and Ki‐energy. Yuasa Yasuo, trans, by Shigenori Nagatomo and Monte S. Hull, 1993, Albany, SUNY Press, xxxvi + 229 pp. 814.95 相似文献