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141.
142.
Self-control can be defined as choosing a smaller, immediate aversive event over a larger, delayed aversive event (e.g., flossing daily instead of risking major dental problems later). Children with developmental disabilities have been found to respond impulsively when given the choice between aversive events that differ based on magnitude and difficulty. However, qualitative differences between events may also impact aversiveness. This study attempted to replicate and extend prior research by (i) empirically identifying a hierarchy of qualitatively different aversive tasks for three individuals with developmental disabilities by evaluating their average latency to escape responses when presented with each task, (ii) assessing baseline levels of self-control (i.e., selection of immediate, low-aversive tasks over delayed, high-aversive tasks), and (iii) implementing an empirically validated treatment (i.e., adding a delay to both tasks). Each participant initially made impulsive choices, but self-control increased following treatment. 相似文献
143.
Although the pigeon is a popular model for studying visual perception, relatively little is known about its perception of motion. Three experiments examined the pigeons’ ability to capture a moving stimulus. In Experiment 1, the effect of manipulating stimulus speed and the length of the stimulus was examined using a simple rightward linear motion. This revealed a clear effect of length on capture and speed on errors. Errors were mostly anticipatory and there appeared to be two processes contributing to response locations: anticipatory peck bias and lag time. Using the same birds as Experiment 1, Experiment 2 assessed transfer of tracking and capture to novel linear motions. The birds were able to capture other motion directions, but they displayed a strong rightward peck bias, indicating that they had learned to peck to the right of the stimulus in Experiment 1. Experiment 3 used the same task as Experiment 2 but with naïve birds. These birds did not show the rightward bias in pecking and instead pecked more evenly around the stimulus. The combined results indicate that the pigeon can engage in anticipatory tracking and capture of a moving stimulus, and that motion properties and training experience influence capture. 相似文献
144.
Christopher K. Hsee 《决策行为杂志》1998,11(2):107-121
This research demonstrates a less-is-better effect in three contexts: (1) a person giving a $45 scarf as a gift was perceived to be more generous than one giving a $55 coat; (2) an overfilled ice cream serving with 7 oz of ice cream was valued more than an underfilled serving with 8 oz of ice cream; (3) a dinnerware set with 24 intact pieces was judged more favourably than one with 31 intact pieces (including the same 24) plus a few broken ones. This less-is-better effect occurred only when the options were evaluated separately, and reversed itself when the options were juxtaposed. These results are explained in terms of the evaluability hypothesis, which states that separate evaluations of objects are often influenced by attributes which are easy to evaluate rather than by those which are important. © 1998 John Wiley & Sons, Ltd. 相似文献
145.
Bertram Schoner Eng Ung Choo William C. Wedley 《Journal of Multi-Criteria Decision Analysis》1997,6(4):197-200
In a recent paper in this journal, Buede and Maxwell found reasonable agreement between MAVT and conventional AHP most preferred alternatives in a large-scale simulation. We show that MAVT would have had total agreement on preferred alternatives with two modified forms of AHP, referenced AHP and linking pin AHP, under simulation. © 1997 John Wiley & Sons, Ltd. 相似文献
146.
Separate and joint evaluations differ in the manner in which attribute information is processed. We propose that negative attributes weigh more in separate compared to joint ratings. To assess the relative weights of positive and negative attributes, stimuli were employed containing mixed attribute valence, with good and poor attributes. In three experiments it was demonstrated empirically that, using such mixed valence options, the negative attributes indeed weighed more than the positive ones in separate compared to joint ratings. Direct evidence for the increased weight of negative attributes in separate ratings was provided by showing preference shifts between joint and separate ratings for options with mixed attribute valence. Copyright © 2004 John Wiley & Sons, Ltd. 相似文献
147.
Hirokazu Yoshimura 《The Japanese psychological research》2002,44(4):228-233
Abstract: The present research aimed to identify the important factor that makes it difficult to re‐acquire upright vision when wearing visually transposed goggles. The author wore left‐right reversing goggles and up‐down reversing goggles each for 14 days in 1986 and in 1990, respectively. When lying on one side with the left‐right reversing goggles on, the observer could get upside‐down vision, which made it possible to compare the difficulty of attaining upright vision when wearing up‐down reversing goggles. The only difference between the two situations is the dimension of the body image to be exchanged: The observer had to exchange the left and right halves of his body in the former situation and had to exchange along the top‐bottom axis of body in the latter situation. Introspective data revealed that attaining an upright sense is easier in the former situation; this means that the asymmetrical structure of our body in the top‐bottom dimension is an important factor in the difficulty of re‐acquiring upright vision. 相似文献
148.
采用条件性辨别反转范式,考察自闭症儿童与正常儿童的反转灵活性。44名5~6岁儿童(24名自闭症儿童,20名正常儿童)参加了辨别反转学习。结果显示:⑴在习得阶段,两类儿童都能辨别两个不同的条件性刺激;⑵在晚期反转阶段,正常儿童在晚期反转阶段升高了对新的条件性厌恶刺激的主观预期值,辨别了新的条件性刺激,而自闭症儿童在晚期反转阶段对新的条件性厌恶刺激的主观预期值没有显著性变化,无法辨别新的条件性刺激。研究结果表明,5~6岁自闭症儿童反转灵活性存在缺陷。 相似文献
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