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141.
DO ADJUSTING‐AMOUNT AND ADJUSTING‐DELAY PROCEDURES PRODUCE EQUIVALENT ESTIMATES OF SUBJECTIVE VALUE IN PIGEONS? 总被引:1,自引:0,他引:1
Green L Myerson J Shah AK Estle SJ Holt DD 《Journal of the experimental analysis of behavior》2007,87(3):337-347
The current experiment examined whether adjusting-amount and adjusting-delay procedures provide equivalent measures of discounting. Pigeons' discounting on the two procedures was compared using a within-subject yoking technique in which the indifference point (number of pellets or time until reinforcement) obtained with one procedure determined the value of the corresponding variable in the yoked condition with the other procedure. Behavior on each procedure was well described by a hyperbolic discounting function. Results revealed no systematic differences in the degree of discounting as measured by the discounting rate parameter of the hyperbola in Experiment 1, which used 20-mg pellets. These results were replicated in Experiment 2 using smaller, 14-mg pellets, which potentially yield more precise measurement of indifference points on the adjusting-amount procedure. The finding that estimates of the k parameter in the hyperbolic discounting function obtained with one procedure did not differ systematically from estimates obtained from the same subjects with the other procedure represents strong support for the hypothesis that the same process underlies the discounting of delayed rewards on both adjusting-amount and adjusting-delay procedures. 相似文献
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Dylan Jones Clare Madden Chris Miles 《The Quarterly Journal of Experimental Psychology Section A: Human Experimental Psychology》1992,44(4):645-669
Memory for visually presented items is impaired by speech that is played as an irrelevant background. The paper presents the view that changing state of the auditory material is an important prerequisite for this disruption. Four experiments studied the effects of sounds varying in complexity in an attempt to establish which features of changing state in the auditory signal lead to diminished recall. Simple unvarying or repetitive speech sounds were not sufficient to induce the irrelevant speech effect (Experiment 1): in addition, simple analogues of speech, possessing regular or irregular envelopes and using a range of carriers, failed to imitate the action of speech (Experiment 2). Variability of between-utterance phonology in the irrelevant stream (Experiment 3) emerged as a crucial factor. Moreover, predictability of the syllable sequence did not reduce the degree of disruption (Experiment 4) suggesting that supra-syllabic characteristics of the speech are of little importance. The results broadly support the idea that disruption of short-term memory only occurs when the speech stream changes in state. It is argued that disruption occurs in memory when cues to serial order based on phonological representations of heard material interfere with the phonological codes of visual origin. It is suggested that cues to changing state of the speech input contaminate those associated with items of visual origin, which are already in a phonological store. 相似文献
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Timothy R. Levine Kim B. Serota Hillary Shulman David D. Clare Hee Sun Park Allison S. Shaw Jae Chul Shim Jung Hyon Lee 《人类交流研究》2011,37(3):377-403
Sender demeanor is an individual difference in the believability of message senders that is conceptually independent of actual honesty. Recent research suggests that sender demeanor may be the most influential source of variation in deception detection judgments. Sender demeanor was varied in five experiments (N = 30, 113, 182, 30, and 35) to create demeanor–veracity matched and demeanor–veracity mismatched conditions. The sender demeanor induction explained as much as 98% of the variance in detection accuracy. Three additional studies (N = 30, 113, and 104) investigated the behavioral profiles of more and less believable senders. The results document the strong impact of sender effects in deception detection and provide an explanation of the low‐accuracy ceiling in the previous findings. 相似文献
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‘In Some Eyes It's Still Oooh,Gloucester, Yeah Fred West’: Spatial Stigma and the Impact of a High‐profile Crime on Community Identity 下载免费PDF全文
The question of how crime impacts on others has generated a wealth of research over the past few decades. However, there is surprisingly little knowledge about how ‘high‐profile’ crimes impact on community members who live in a town that has become synonymous with the crime itself. This study involves interviews with community members who lived or worked in the town of Gloucester when the serial killings perpetrated by Fred and Rosemary West were discovered in 1994. An interpretative phenomenological analysis explores the lived experiences and meaning‐making processes engaged in by the participants. Findings highlight their attempts to make sense of a high‐profile case that stigmatised their own community and the practices of identity management that continue to operate some 20 years later. Copyright © 2014 John Wiley & Sons, Ltd. 相似文献
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