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61.
Six unsuccessful attempts at replicating a key finding in the linguistic relativity literature [Boroditsky, L. (2001). Does language shape thought?: Mandarin and English speakers' conceptions of time. Cognitive Psychology, 43, 1-22] are reported. In addition to these empirical issues in replicating the original finding, theoretical issues present in the original report are discussed. In sum, we conclude that Boroditsky (2001) provides no support for the Whorfian hypothesis. 相似文献
62.
Investigations of patients with temporal lobe epilepsy continue to result in significant advancements in the neuroscience
of human memory, as they have for over 50 years. Recent reviews describing the state of the art in the clinical neuropsychology
of TLE generally have emphasized (1) lateralization of cognitive deficits and the material-specific model of memory and/or
(2) the relationships among pre- and post-surgery performance on standardized measures of anterograde memory, demographic
and epilepsy variables and neuroimaging, neuropathology, and neurosurgery data. As information continues to accumulate about
the pattern of performance on standard laboratory memory tests and the implications of these data before and after anterior
temporal lobectomy for the treatment of TLE, innovative assessment techniques also are increasingly being applied. This review
focuses on English language publications that addressed selected novel topics in adult TLE memory research. These topics are:
(1) remote memory; (2) accelerated forgetting or long term amnesia; and (3) lateral versus mesial temporal lobe contributions
to memory. 相似文献
63.
Successful investors seeking returns, animals foraging for food, and pilots controlling aircraft all must take into account how their current decisions will impact their future standing. One challenge facing decision makers is that options that appear attractive in the short-term may not turn out best in the long run. In this paper, we explore human learning in a dynamic decision making task which places short- and long-term rewards in conflict. Our goal in these studies was to evaluate how people’s mental representation of a task affects their ability to discover an optimal decision strategy. We find that perceptual cues that readily align with the underlying state of the task environment help people overcome the impulsive appeal of short-term rewards. Our experimental manipulations, predictions, and analyses are motivated by current work in reinforcement learning which details how learners value delayed outcomes in sequential tasks and the importance that “state” identification plays in effective learning. 相似文献
64.
Perceived order of two consecutive stimuli may not correspond to the order of their physical onsets. Such a disagreement presumably results from a difference in the speed of stimulus processing toward central decision mechanisms. Since previous evidence suggests that the right posterior parietal cortex (PPC) plays a role in modulating the processing speed of a visual target, we applied single-pulse TMS over the region in 14 normal subjects, while they judged the temporal order of two consecutive visual stimuli. Stimulus-onset-asynchrony (SOA) randomly varied between -100 and 100 ms in 20-ms steps (with a positive SOA when a target appeared on the right hemi-field before the other on the left), and a point of subjective simultaneity was measured for individual subjects. TMS stimulation was time-locked at 50, 100, 150, and 200 ms after the onset of the first stimulus, and results in trials with TMS on right PPC were compared with those in trials without TMS. TMS over the right PPC delayed the detection of a visual target in the contralateral, i.e., left hemi-field by 24 (+/-7 SE) ms and 16 (+/-4 SE) ms, when the stimulation was given at 50 and 100 ms after the first target onset. In contrast, TMS on the left PPC was not effective. These results show that the right PPC is important in a timely detection of a target appearing on the left visual field, especially in competition with another target simultaneously appearing in the opposite field. 相似文献
65.
Prospective hindsight involves generating an explanation for a future event as if it had already happened; i.e., one goes forward in time, and then looks back. In order to examine how shifts in perspective might influence people's perceptions of events, we investigated two possible factors: temporal perspective (whether an event is set in the future or past) and uncertainty (whether the event's occurrence is certain or uncertain). In the first experiment, temporal perspective showed little influence while outcome uncertainty strongly affected the nature of explanations for events. Explanations for sure events tended to be longer, to contain a higher proportion of episodic reasons, and to be expressed in past tense. Evidence from the second experiment supports the view that uncertainty mediates not the amount of time spent explaining, but rather subjects' choice of explanation type. The implications of these findings for the use of temporal perspective in decision aiding are discussed. 相似文献
66.
A distinction is made between decision utility, experienced utility, and predicted utility and an experiment is reported addressing people's ability to forecast experienced utility. Subjects in two experiments made predictions of their future liking for stimuli to which they were then exposed daily for one week. The stimuli were ice cream in a pilot study, plain yogurt in the main study, and short musical pieces in both studies. Decreased liking was the modal prediction, even when the true outcome was increased liking, or reduced dislike. There was substantial stability of tastes, but there were also substantial individual differences in the size and even the sign of changes in liking with repeated exposure. There was little or no correlation between the predictions of hedonic change that individuals made and the changes they actually experienced. 相似文献
67.
An identity negative priming task was employed to investigate cognitive inhibition in 245 undergraduates. The task presented consecutively a prime and a probe display that contained a target and a distractor. Negative priming is observed when subjects must respond to a target in the probe display that had been a distractor in the prime display. This task also served to study the Eriksen interference effect by comparing a condition in which the target and the distractor had the same identity with a condition in which they had different identities. Subjects completed the Sensitivity to Punishment and Sensitivity to Reward Questionnaire designed to measure Gray's anxiety and impulsivity dimensions. Results showed that impulsives had a lower cognitive inhibition than non-impulsives, whereas impulsive women also showed a greater Eriksen interference effect than non-impulsive women. Furthermore, no differences in task performance were found between anxious and non-anxious groups. Our discussion considers the importance of studying cognitive functioning in personality research. 相似文献
68.
Results from previous studies suggest that the entorhinal cortex may be involved in mnemonic processes. The present study was carried out to investigate whether disruption of fibre connections between the temporal cortex and lateral entorhinal area may impair retention of a pre-operatively acquired simultaneous brightness discrimination task. The lesion resulted in a severe impairment in retaining the discrimination task (Experiment 1). The retention deficit could not be traced into the hippocampal formation by making perforant path lesions or hippocampal lesions (Experiment 2). The results indicate that the lateral entorhinal cortex is more crucial for reference memory than the hippocampal formation. 相似文献
69.
Porges的多迷走神经理论提出迷走神经活动(vagal activity)与儿童的情绪及社会行为密切联系,已有研究探讨了儿童迷走神经活动与儿童的情绪反应及调节的关系,但研究结论不够清晰,需要进一步研究澄清。本研究选取93名4-6岁学前儿童被试,运用生理测量手段与呼吸性窦性心律不齐(respiratory sinus arrhythmia,RSA)分析的方法,采用父母报告的学前儿童情绪反应强度、情绪调节能力、冲动性为结果变量,进一步探讨儿童迷走神经活动(以基线RSA、RSA撤出、RSA恢复为指标)与情绪反应、情绪调节及冲动性的关系。研究发现:(1)基线RSA与儿童情绪反应强度显著负相关,与儿童情绪调节能力显著正相关,基线RSA是儿童情绪反应强度显著负向预测因子,是儿童情绪调节能力的显著正向预测因子;(2)RSA撤出、RSA恢复性与儿童冲动性显著负相关,是儿童冲动性显著负向预测因子。研究结果支持了Porges的多迷走神经理论,表明迷走神经活动与儿童情绪反应、情绪调节及冲动性密切联系。 相似文献
70.
Acquired social disinhibition refers to a debilitating behavioural syndrome commonly reported after a severe traumatic brain injury (TBI) and is characterized by inappropriate social behaviour, often described as immaturity and insensitivity towards others. These behaviours can have enduring effects on the social capability of the individual and their relationships with others. However, research into socially disinhibited behaviour after TBI has been thwarted by a lack of consensus in the literature on definition and measurement. This review provides an overview of our current understanding of the definition, measurement, prevalence, associated outcomes, neuropathology, and underlying mechanisms of social disinhibition after TBI. In addition, suggestions are made for future research to further our understanding of this syndrome with the eventual aim of rehabilitating problematic behaviours. It is concluded that an improved understanding of what causes disinhibited behaviour after TBI will be necessary for the development of effective treatment strategies aimed at the rehabilitation of underlying impairments. 相似文献