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排序方式: 共有197条查询结果,搜索用时 15 毫秒
141.
Observers demonstrate an impaired ability to report the second of two targets in a rapid serial visual presentation (RSVP) stream if it appears within 500 ms of the first target--a phenomenon known as the attentional blink. This study investigated the fate of stimuli in dual-target RSVP streams that do not require report--the distractors. In five experiments, observers viewed dual-target RSVP streams where the items flanking Target 1 either had the same identity (repeats) or a different identity (non-repeats). Repeated distractors reduced the attentional blink, but only if two conditions were met (1) the items flanking Target 1 were featurally identical and (2) the distractors were drawn from a different alphanumeric category to the targets (e.g. digits vs. letters). We interpret this reduced blink magnitude in the repeat trials as evidence that in RSVP streams distractor items that appear in close temporal proximity to Target 1 are inhibited and we propose that this inhibition occurs both at the level of alphanumeric features and abstract identities. 相似文献
142.
Previous studies demonstrated that interference control in stimulus–stimulus compatibility tasks slowed down stopping in the stop signal task (e.g., Kramer, A. F., Humphrey, D. G., Larish, J. F., Logan, G. D., & Strayer, D. L. (1994). Aging and inhibition: beyond a unitary view of inhibitory processing in attention. psychology and aging, 9, 491–512). In the present study, the impact of stimulus–stimulus compatibility and stimulus–response compatibility on response inhibition is further investigated. In Experiment 1, the stop signal task was combined with a traditional horizontal Simon task and with a vertical variant. For both dimensions, stopping responses was prolonged in incompatible trials, but only when the previous trial was compatible. In Experiment 2, the Simon task was combined with a spatial Stroop task in order to compare the effects of stimulus–stimulus and stimulus–response compatibility. The results demonstrated that both types of compatibility influenced stopping in a similar way. These findings are in favor of the hypothesis that response inhibition in the stop signal task and interference control in conflict tasks rely on similar mechanisms. 相似文献
143.
J.Richard Simon 《Acta psychologica》1982,51(1):61-73
The Sternberg Additive Factor Method was used to draw inferences about the flow of information under single- and dual-tasks conditions which were identical in terms of the stimuli involved but different in terms of response requirements. In both conditions, subjects pressed a left- or right-hand key in response to the onset of an X or O (intact or degraded) which was accompanied by a monaural or binaural tone. In the dual-tasks condition, subjects responded verbally to the tone location while also making the key-press response, whereas, in the single-task condition, no response to the tone was required. The pattern of main effects and interactions suggested that the same model of information flow described both single- and dual-tasks conditions; i.e., visual and auditory stimuli were encoded separately but shared capacity at the response selection stage. 相似文献
144.
R. T. Busse Thomas R. Kratochwill Stephen N. Elliott 《Journal of School Psychology》1995,33(4):269-285
The application of meta-analysis holds much appeal for single-case consultation outcome research. We review a meta-analytic method for using within-study treatment effect sizes in reporting consultation outcomes. The strengths and limitations of traditional group design meta-analysis are examined. Various methods for analyzing single-case outcomes are discussed briefly, followed by an examination of the use of meta-analysis in single-case reviews across independent studies. Within-study meta-analytic results are presented that were derived from treatments implemented in consultations in natural settings. To conclude the article, an illustration is offered of a single-case data analysis display that incorporates meta-analytic results along with other indices of treatment outcome. Recommendations are provided for using meta-analytic methods to evaluate outcomes of single-case consultation treatment. 相似文献
145.
The existence of the Language Familiarity Effect (LFE), where talkers of a familiar language are easier to identify than talkers of an unfamiliar language, is well-documented and uncontroversial. However, a closely related phenomenon known as the Other Accent Effect (OAE), where accented talkers are more difficult to recognize, is less well understood. There are several possible explanations for why the OAE exists, but to date, little data exist to adjudicate differences between them. Here, we begin to address this issue by directly comparing listeners’ recognition of talkers who speak in different types of accents, and by examining both the LFE and OAE in the same set of listeners. Specifically, Canadian English listeners were tested on their ability to recognize talkers within four types of voice line-ups: Canadian English talkers, Australian English talkers, Mandarin-accented English talkers, and Mandarin talkers. We predicted that the OAE would be present for talkers of Mandarin-accented English but not for talkers of Australian English—which is precisely what we observed. We also observed a disconnect between listeners’ confidence and performance across different types of accents; that is, listeners performed equally poorly with Mandarin and Mandarin-accented talkers, but they were more confident with their performance with the latter group of talkers. The present findings set the stage for further investigation into the nature of the OAE by exploring a range of potential explanations for the effect, and introducing important implications for forensic scientists’ evaluation of ear witness testimony. 相似文献
146.
大中学生四卡问题推理能力发展的实验研究 总被引:1,自引:0,他引:1
该文研究了大中学生四卡问题推理能力的发展,以及材料性质和指导语形式对这种发展的影响。结果发现:(1)具体材料上被试四卡问题的推理能力具有明显的发展趋势,高中时期是四卡问题推理能力发展的转折期。(2)存在主题促进效应。(3)指导语形式影响高中生在具体材料的四卡问题上的推理。 相似文献
147.
Subrata Dasgupta 《Cognitive Science》2003,27(5):683-707
In the twentieth century, no person epitomized more dramatically the “Renaissance mind” than Herbert A. Simon (1916–2001). In aworking life spanning over 60 years, Simon made seminal contributions to administrative theory, axiomatic foundations of physics, economics, sociology, econometrics, cognitive psychology, logic of scientific discovery, and artificial intelligence. Simon's life of the mind, thus, affords nothing less than a “laboratory” in which to observe and examine at close quarters the phenomenon of multidisciplinary creativity. In this paper, we attempt to shed some light on the nature of Simon's creativity and the nature of his particular Renaissance mind. In particular, we have attempted here to articulate the cognitive style underlying Simon's multidisciplinary creativity. 相似文献
148.
采用练习迁移范式与双任务范式相结合的设计来探讨练习所习得的空间联结在工作记忆中如何表征。被试先进行不一致空间的刺激—反应映射练习任务, 五分钟后, 随机迁移到单任务(Simon任务)或者双任务(Simon任务+语义工作记忆负荷任务或空间工作记忆负荷任务)。结果发现:不一致的练习能使单任务出现反转的Simon效应, 但语义工作记忆负荷会使反转的Simon效应消失, 而空间工作记忆负荷却对反转的Simon效应没有影响。实验结果表明练习产生的空间联结依赖于语义工作记忆。 相似文献
149.
干扰项预习效应是视觉搜索的试次间效应, 反映了过去不成功的搜索经验对注意的抑制。本研究中, 被试对情绪材料进行视觉搜索时, 同一个画面中的刺激的情绪效价可能一致, 也可能存在一个效价与众不同的靶子。实验任务是要求被试找到该靶子, 并对它的非情绪特征进行辨别反应。本研究包括3个实验, 分别采用情绪面孔的照片、情绪性动物图片、情绪性动物示意图, 均发现了情绪干扰项预习效应。也就是说, 当先呈现无靶子的试次再呈现有靶子的试次, 且有靶子的试次中干扰项的效价与之前无靶子试次中的刺激的效价一致时, 被试的反应要比靶子的效价与之前无靶子试次中刺激效价一致时更快。这些结果表明, 选择性注意系统可以利用以往的情绪信息引导注意的分配, 使当前注意偏离那些曾经搜索过但没有找到靶子的情绪特征, 而且这些情绪信息可能是由人脸表达的, 也可能是由于人以外的因素表达的。这些结果体现了情绪与认知的交互作用, 尤其是个体对情绪的已有经验对视觉选择注意的引导作用。 相似文献
150.
Marco Del Giudice 《Multivariate behavioral research》2017,52(2):216-221
The Mahalanobis distance D is the multivariate generalization of Cohen's d and can be used as a standardized effect size for multivariate differences between groups. An important issue in the interpretation of D is heterogeneity, that is, the extent to which contributions to the overall effect size are concentrated in a small subset of variables rather than evenly distributed across the whole set. Here I present two heterogeneity coefficients for D based on the Gini coefficient, a well-known index of inequality among values of a distribution. I discuss the properties and limitations of the two coefficients and illustrate their use by reanalyzing some published findings from studies of gender differences. 相似文献