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191.
从知觉负载理论来理解选择性注意 总被引:9,自引:0,他引:9
知觉负载理论被认为解决了选择性注意研究的早选择和晚选择观点之争。当前任务对注意资源的耗用程度决定了与任务无关的干扰刺激得到多少加工,从而导致在低知觉负载下,注意资源自动溢出去加工干扰刺激(晚选择),而在高知觉负载下,注意资源被当前任务耗尽而无法加工干扰刺激(早选择)。知觉负载理论提出后,研究者进行了一系列研究。一部分工作专注于知觉负载对选择性注意的调节作用;另外一些工作则关注其他认知过程如何影响注意资源的分配,其中知觉负载与工作记忆负载的关系是当前关注重点。 相似文献
192.
汉语词汇产生中语义、字形和音韵激活的时间进程 总被引:18,自引:4,他引:14
通过图画-词汇干扰实验范式探索汉语单字词产生中语义、字形和语音激活的时间进程。实验一和实验二的结果综合表明:当SOA为-300 ms~0 ms时,存在语义抑制效应,当SOA为-100 ms~100 ms时,存在字形促进效应,当SOA为100 ms时,存在语音促进效应。实验结果支持交互激活理论的观点。实验成功地分离了字形促进效应和语音促进效应,确定了语义、字形和语音这三种信息在汉语口语词汇产生中通达的先后次序,讨论了字形信息在词汇产生中的重要作用,以及被试是否在实验中使用了策略。 相似文献
193.
汉语并列式合成词的词汇通达 总被引:6,自引:0,他引:6
汉语并列式合成词具有三种类型,这三种类型内部不同的词素组合在心理词典中则需要不同的词汇通达时间。实验结果表明,在对汉语并列式合成词的词汇通达过程中,第一成分并不总是起决定作用;同样,并列式合成词中的两个成分在词汇通达过程中并不总是同等重要。实验证明,语义透明度对并列式合成词的词汇通达起重要作用。实验还发现,在心理词典中对并列式合成词的词汇通达需要一个证实原则。 相似文献
194.
A variable-selection heuristic for K-means clustering 总被引:4,自引:0,他引:4
One of the most vexing problems in cluster analysis is the selection and/or weighting of variables in order to include those that truly define cluster structure, while eliminating those that might mask such structure. This paper presents a variable-selection heuristic for nonhierarchical (K-means) cluster analysis based on the adjusted Rand index for measuring cluster recovery. The heuristic was subjected to Monte Carlo testing across more than 2200 datasets with known cluster structure. The results indicate the heuristic is extremely effective at eliminating masking variables. A cluster analysis of real-world financial services data revealed that using the variable-selection heuristic prior to the K-means algorithm resulted in greater cluster stability. 相似文献
195.
Sharon M. Flicker Flavia Sancier-Barbosa Farhana Afroz Sumaiya N. Saif Faeqa Mohsin 《International journal of psychology》2020,55(4):638-646
Attachment theory posits that in adulthood, romantic partners typically fill the role of primary attachment figure, yet few studies have examined whether these findings hold in cultures that practice arranged marriage or that emphasise collectivistic values and filial piety. In the current study, we compared attachment hierarchies in 116 Bangladeshi women engaged to be married or in the first 3 years of couple-initiated (also known as love) marriages and arranged marriages. Women in couple-initiated marriages reported greater use of their partners for the attachment functions of safe haven and secure base than women in arranged marriages. However, women in both groups were more likely to identify one of their parents than their partner as their primary attachment figure. Although replication is necessary, these findings suggest that partners may not be universally prioritised above parents in the attachment hierarchy and that attachment theory's assumptions of individuation from parents in adulthood may not apply cross-culturally. Findings are discussed in terms of cultural differences from samples previously represented in attachment research, such as kinship structures, the meaning of marriage and filial piety. 相似文献
196.
When incorporating the environment into mental processing (cf., cognitive offloading), one creates novel cognitive strategies that have the potential to improve task performance. Improved performance can, for example, mean faster problem solving, more accurate solutions, or even higher grades at university.1 Although cognitive offloading has frequently been associated with improved performance, it is yet unclear how flexible problem solvers are at matching their offloading habits with their current performance goals (can people improve goal‐related instead of generic performance, e.g., when being in a hurry and aiming for a “quick and dirty” solution?). Here, we asked participants to solve a cognitive task, provided them with different goals—maximizing speed (SPD) or accuracy (ACC), respectively—and measured how frequently (Experiment 1) and how proficiently (Experiment 2) they made use of a novel external resource to support their cognitive processing. Experiment 1 showed that offloading behavior varied with goals: Participants offloaded less in the SPD than in the ACC condition. Experiment 2 showed that this differential offloading behavior was associated with high goal‐related performance: fast answers in the SPD, accurate answers in the ACC condition. Simultaneously, goal‐unrelated performance was sacrificed: inaccurate answers in the SPD, slow answers in the ACC condition. The findings support the notion of humans as canny offloaders who are able to successfully incorporate their environment in pursuit of their current cognitive goals. Future efforts should be focused on the finding's generalizability, for example, to settings without feedback or with high mental workload. 相似文献
197.
Recently, a multiple comparisons procedure was derived with the goal of determining whether it is reasonable to make a decision about which of J independent groups has the largest robust measure of location. This was done by testing hypotheses aimed at comparing the group with the largest estimate to the remaining J − 1 groups. It was demonstrated that for the goal of controlling the familywise error rate, meaning the probability of one or more Type I errors, well-known improvements on the Bonferroni method can perform poorly. A technique for dealing with this issue was suggested and found to perform well in simulations. However, when dealing with dependent groups, the method is unsatisfactory. This note suggests an alternative method that is designed for dependent groups. 相似文献
198.
针对我国重型肝炎治疗现状,对重型肝炎常用的以及部分有争议的治疗药物和方法进行分析和讨论,就如何选择治疗方案提出医疗原则,认为应采取内科治疗-人工肝-肝移植的综合治疗模式,结合患者的治疗愿望及经济承受力,理性地选择治疗方案,以期达到合理、有效和经济的目的。 相似文献
199.
Pigeons were presented with an operant simulation of two prey patches using concurrent random-ratio schedules of reinforcement. An unstable patch offered a higher initial reinforcement probability, which then declined unpredictably to a zero reinforcement probability in each session. A stable patch offered a low but unvarying reinforcement probability. When the reinforcement probability declined to zero in a single step, the birds displayed shorter giving-up times in the unstable patch when the ratio between the initial reinforcement probabilities in the unstable and stable patches was greater and when the combined magnitude of the reinforcement probabilities in the two patches was greater. When the unstable patch declined in two steps, the birds behaved as if their giving-up times were influenced heavily by events encountered during the most recent step of the double-step change. This effect was observed, however, only when the reinforcement probability in that step was .04, not when it was .06. All of these data agree with the predictions of a capture-probability model based on a comparison of the estimated probability of receiving a reinforcer in the current patch with that in alternative patches. 相似文献
200.
MATTI LAINE 《Scandinavian journal of psychology》1996,37(3):238-248
The present study tested whether Finnish inflectional or derivational suffixes have lexical access units separate from word roots. In three lexical decision experiments, pseudowords carrying a case-inflection required significantly longer rejection times than nonaffixed pseudowords. This suggests that case-inflections have separate lexical access units. Similar effects were obtained for productive derivational suffixes, too. A specific lexical architecture, being able to account for both the present pseudoword results as well as earlier ones obtained with real Finnish nouns, is proposed. 相似文献