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211.
212.
When synthetic fricative noises from a [∫]-[s] continuum are followed by [a] or [u] (with appropriate formant transitions), listeners perceive more instances of [s] in the context of [u] than in the context of [a]. Presumably, this reflects a perceptual adjustment for the coarticulatory effect of rounded vowels on preceding fricatives. In Experiment 1, we found that varying the duration of the fricative noise leaves the perceptual context effect unchanged, whereas insertion of a silent interval following the noise reduces the effect substantially. Experiment 2 suggested that it is temporal separation rather than the perception of an intervening stop consonant that is responsible for this reduction, in agreement with recent, analogous observations on anticipatory coarticulation. In Experiment 3, we showed that the vowel context effect disappears when the periodic stimulus portion is synthesized so as to contain no formant transitions. To dissociate the contribution of formant transitions from contextual effects due to vowel quality per se, Experiment 4 employed synthetic fricative noises followed by periodic portions excerpted from naturally produced [∫a], [sa], [∫u], and [su]. The results showed strong and largely independent effects of formant transitions and vowel quality on fricative perception. In addition, we found a strong speaker (male vs. female) normalization effect. All three influences on fricative perception were reduced by temporal separation of noise and periodic stimulus portions. Although no single hypothesis can explain all of our results, they are generally supportive of the view that some knowledge of the dynamics of speech production has a role in speech perception. 相似文献
213.
Virginia A. Mann 《Attention, perception & psychophysics》1980,28(5):407-412
Certain attributes of a syllable-final liquid can influence the perceived place of articulation of a following stop consonant. To demonstrate this perceptual context effect, the CV portions of natural tokens of [al-da], [al-ga], [ar-da], [ar-ga] were excised and replaced with closely matched synthetic stimuli drawn from a [da]-[ga] continuum. The resulting hybrid disyllables were then presented to listeners who labeled both liquids and stops. The natural CV portions had two different effects on perception of the synthetic CVs. First, there was an effect of liquid category: Listeners perceived “g” more often in the context of [al] than in that of [ar]. Second, there was an effect due to tokens of [al] and [ar] having been produced before [da] or [ga]: More “g” percepts occurred when stops followed liquids that had been produced before [g]. A hypothesis that each of these perceptual effects finds a parallel in speech production is supported by spectrograms of the original utterances. Here, it seems, is another instance in which findings in speech perception reflect compensation for coarticulation during speech production. 相似文献
214.
W. Sluckin J. C. Berryman A. Mayes D. Mann 《Quarterly journal of experimental psychology (2006)》1979,31(4):701-710
The aim of the present experiments was to find out how imprinted chicks respond to familiar figures in unfamiliar settings. Experiment I showed that chicks individually imprinted with a coloured stationary disc did not readily approach it when later confronted with it in a larger pen—a confirmation of an earlier finding. Experiment II showed a similar disruptive effect when the chicks were individually presented with a stationary object (a ball) in a pen differing in colour from the original one. Experiment III, however, in which chicks were imprinted to a moving ball, showed unattenuated imprinting when testing took place in a strange environment. It was concluded that the disruptive effect of neophobia can be overcome when a high degree of figure salience ensures powerful imprinting. 相似文献
215.
Strabismic subjects in whom vision in one eye is constantly suppressed localized targets at different points in space when using each eye. Whether they were esotropes or exotropes determined the relation between the two locations and the angle of their vergence error correlated with the magnitude of the interocular discrepancy. These relationships suggest that constant suppressors utilize information about posture of the dominant eye in reaching toward targets presented to the normally suppressed eye. Neither orthotropes nor strabismics in whom vision in each eye is alternately suppressed showed this anomaly. These results were attributed to differences in the way in which visual space is represented, an outcome of the pattern of use of the eyes during early development. 相似文献
216.
Stabilized images: Dependent variable specificity of pattern-specific effects with prolonged viewing
Mark P. Cosgrove Marty J. Schmidt Dan D. Fulgham D. R. Brown 《Attention, perception & psychophysics》1972,11(6):398-402
Two studies report results of viewing lines in different orientations in stabilized Maxwellian view. The first study examined the time course of four dependent variables-whole- and partial-fade frequencies and whole- and partial-fade durations. Whole-fade frequencies increased systematically throughout 10 min of the 15-min viewing session and were sensitive to line orientations. Partial-fade frequencies increased for 3–5 min during which orientation specificity occurred. Thereafter, partial-fade rate was constant and pattern-specific effects disappeared. Mean fade duration, which increased throughout the 15-min session for whole fades but for only 5 min for partial fades, was not pattern-specific. The second study demonstrated that the pattern specificity of whole fades could not be accounted for in terms of time-dependent extraneous variables. It was concluded that partial and whole fades may reflect the operation of different visual processes. The complete fading of images was attributed to the operation of supraretinal pattern processing units. 相似文献
217.
医学教育中的动机:理论如何指导实践 总被引:2,自引:1,他引:1
李皓桓 《医学与哲学(人文社会医学版)》2000,21(3):57-58
教育研究者和心理学家认为,满足需要、强化行为、体现个性、减少不适,以及获得个人的发展和实现是学习和行为改变的动因。基于回报的价值和对回报期望值的不同,人们对动机作了种种解释。Bandura把动机形成与刺激联系在一起。他断言,所有的人天生便能选择他认为有价... 相似文献
218.
Teaching multiply controlled intraverbals to children and adolescents with autism spectrum disorders
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April N. Kisamore Amanda M. Karsten Charlotte C. Mann 《Journal of applied behavior analysis》2016,49(4):826-847
Reciprocal conversations, instructional activities, and other social interactions are replete with multiply controlled intraverbals, examples of which have been conceptualized in terms of conditional discriminations. Although the acquisition of conditional discriminations has been examined extensively in the behavior‐analytic literature, little research has evaluated procedures to establish multiply controlled intraverbals. Thus, the purpose of this investigation was to evaluate the effects of procedures based on conditional discrimination training on the acquisition of multiply controlled intraverbals with 7 participants who had been diagnosed with autism spectrum disorders. We evaluated the effects of prompt delay with error correction, a differential observing response (DOR), and a DOR plus blocked trials on the acquisition of intraverbals using a multiple baseline design. Accuracy of intraverbal performance increased for at least 1 set of stimuli for all participants under prompt delay with error correction conditions; however, 4 participants required additional teaching (i.e., DOR, modified DOR, modified prompt delay with error correction). Based on these findings, when prompt delay with error correction is not sufficient to establish multiply controlled intraverbals, prompted DORs may be an effective alternative. 相似文献
219.
Please be Honest and Provide Evidence: Deterrents of Deception in an Online Insurance Fraud Context
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The present experiment examined whether people could be deterred from lying in an online insurance claim setting. A total of 96 participants were asked to submit a theft insurance claim. Reflecting real life, submitting a claim that went beyond the actual costs of the stolen items was associated with advantages and disadvantages. Two deterrence factors were introduced: asking claimants to provide evidence that they actually owned the stolen items (Evidence Instruction, often used by insurers) and asking participants to read out before starting to submit the claim that they will be truthful (Honesty Statement, not often used by insurers). We also examined at what stage of the interview claimants embedded their lies in their otherwise truthful stories. The honesty statement but not the evidence instruction made claimants more honest, and participants lied more as the interview progressed. © 2016 The Authors Applied Cognitive Psychology Published by John Wiley & Sons Ltd. 相似文献
220.
Using the Model Statement to Elicit Information and Cues to Deceit from Native Speakers,Non‐native Speakers and Those Talking Through an Interpreter
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Sarah Ewens Aldert Vrij Sharon Leal Samantha Mann Eunkyung Jo Alla Shaboltas Maria Ivanova Juliana Granskaya Kate Houston 《Applied cognitive psychology》2016,30(6):854-862
We examined how the presence of an interpreter during an interview affects eliciting information and cues to deceit, whilst using a method that encourages interviewees to provide more detail (model statement, MS). Sixty native English speakers were interviewed in English, and 186 non‐native English speakers were interviewed in English or through an interpreter. Interviewees either lied or told the truth about a mock security meeting, which they reported twice: in an initial free recall and after listening to the MS. The MS resulted in the native English speakers and those interviewed with an interpreter providing more reminiscences (additional detail) than the non‐native English speakers interviewed without an interpreter. As a result, those interviewed through an interpreter provided more detail than the non‐native English speakers, but only after the MS. Native English participants were most detailed in both recalls. No difference was found in the amount of reminiscences provided by liars and truth tellers. Copyright © 2016 John Wiley & Sons, Ltd. 相似文献