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101.
颜色突显是指在与视觉搜索任务有关的视觉显示中,采用颜色突出显示多个项目中的目标项目,从而提高视觉搜索效率的一种方法或技术。本文采用视觉搜索任务,以正确率和反应时为指标对单彩色和复杂彩色背景下不同颜色突显的视觉搜索绩效进行了研究。结果表明:(1)在单彩色背景和复杂彩色背景下,颜色突显条件视觉搜索绩效显著优于非突显条件;(2)在浅蓝或浅绿的单彩色背景下,四种颜色突显绩效中,红色突显绩效最好,紫色最差,而在随机彩色背景和复杂彩色背景下,颜色突显绩效差异并不显著;(3)在彩色背景下的颜色突显绩效会受到干扰数字的颜色的影响,其中在单色和随机彩色背景下,干扰目标颜色为黑色时的视觉搜索绩效优于干扰目标颜色为白色时的情景,而在自然彩色背景下,这种视觉搜索优势并不存在。 相似文献
102.
注意捕获研究对于探讨两种控制过程:自上而下的加工与自下而上的加工之间的关系具有重要的意义。本文通过检验不同工作记忆负荷对注意捕获的影响,探讨自上而下的认知控制对注意捕获的影响机制。本研究共包括二个实验:实验一比较了单、双任务条件对颜色干扰子注意捕获的影响;实验二探讨了不同工作记忆负荷对颜色干扰子注意捕获的影响。实验结果表明:工作记忆不仅在选择性注意任务中具有认知控制作用,而且这种作用能扩展到注意捕获现象中。注意捕获不是纯粹的刺激驱动的加工过程,它还受到自上而下的认知控制的调节。具体表现为,随着工作记忆负荷水平的增加,无关干扰子产生的注意捕获的程度增大。 相似文献
103.
104.
《Journal of Cognitive Psychology》2013,25(2):135-146
Event-based prospective memory (PM) refers to the ability to remember to perform an intended action at an appropriate moment that is indicated by some cue. It has been shown that increasing the number of PM cues as well as decreasing the cues' specificity can impair PM performance. Although both manipulations result in similar detrimental effects to PM accuracy, they may affect different underlying cognitive processes. To test this hypothesis, we manipulated both the number of cues and cue specificity and found the expected detrimental effects on PM accuracy. Analyses with the multinomial model of PM, which considers false PM responses and accounts for guessing biases, imply that the cue-list-length manipulation affected cue singularisation as well as intention retrieval, whereas cue specificity selectively affected intention retrieval. These results are original evidence that the performance decrements from the two manipulations have different cognitive underpinnings. 相似文献
105.
Attrill et al. (2008) conducted a far-reaching study in elite English soccer demonstrating in archival research that from 1946 to 2003 seasons, teams wearing red uniforms were more likely to win championships than teams in other uniform colors, won more at home and had a higher average league position (relative to cross-city rivals). Their study was one of only very few that extended the color-in-context theory (Elliot & maier, 2007) to team, ball-oriented long-duration sports. The current investigation returns to the red superiority hypothesis in professional soccer due to weaknesses in the original evidence for this hypothesis. We conducted two studies testing the red superiority hypothesis in professional soccer. In Study 1a, we first reanalyzed the original data and tested the strength of evidence in favor of the red superiority hypothesis. We then updated the English premier league data (1992–2018) and tested uniform color effects on game outcomes. In Study 2, we attempted to broaden the scope of Study 1 and increase statistical power by testing the red superiority effect during the last 20 years of six major European Soccer leagues (NOS Portugal, German Bundesliga, Dutch Eredivisie, Spanish la Liga, French Ligue 1, and the Italian Serie A). All three tests challenge the validity of the original findings and fail to detect uniform color effects at home play in professional soccer. In light of the current findings and a growing body of research in the field we call into question overall color effects in this athletic context. 相似文献
106.
Romero LJ Garry PJ Schuyler M Bennahum DA Qualls C Ballinger L Kelly V Schmitt C Skipper B Ortiz IE Rhyne RL 《Journal of genetic counseling》2005,14(2):141-150
The purpose of our study is to assess the emotional responses to disclosing APO E genotype to asymptomatic older adults at increased risk for Alzheimer disease (AD). This is a longitudinal cohort study of volunteer subjects who were aged 50 years or over, asymptomatic for (AD), had a family history of AD, passed a psychological assessment, and participated in pre- and post-test genetic counseling and three follow-up visits over 10 months. We analyzed responses by three emotional constructs: depressed, worried, and relieved. Three hundred and twenty-eight subjects were screened, 76 received their APO E genotype. When emotional responses occurred it was immediate, between baseline and the 1 month follow-up. Emotional reactions did not change significantly past 1 month. Our results suggest that for emotionally stable persons, disclosing results of their APO E genotype, high risk subjects did not report more depression or worry and low risk subjects felt relieved by knowing the results. Future studies should evaluate the risks of disclosure to family members involved in the diagnostic work-up of a relative and include subjects from a broader range of emotional stability and socioeconomic background. 相似文献
107.
Kelly A. Heckaman Sheila Alber Sonya Hooper William L. Heward 《Journal of Behavioral Education》1998,8(2):171-201
We compared the effects of two instructional strategies on the frequency of errors and episodes of disruptive behavior of 4 students with autism. In Phase I, easy and difficult tasks were presented to determine whether the tasks were associated with differential rates of disruptive behavior. Phase II compared the effects of a least-to-most prompting procedure (LTM) to a progressive time delay procedure (PTD) on errors and disruptive behavior when difficult tasks were presented. Observers sequentially recorded instructor instructions, response prompts, prompts for appropriate sitting, and feedback statements; and student disruptive, correct, error, and no responses during 1:1 sessions. Results showed PTD produced fewer errors than LTM for all 4 students, and lower rates of disruptive behavior for 2 students. When PTD was implemented as the final phase with 2 of the students, rates of disruptive behavior associated with the task previously taught with LTM immediately decreased. Conditional probability statements indicated that disruptive behavior occurred infrequently with all 4 students when effective response prompts were used. 相似文献
108.
Bjørn Helge Johnsen Kenneth Hugdahl 《Integrative psychological & behavioral science》1994,29(4):395-405
In the present experiment we report effects of cerebral asymmetry, or laterality, during classical conditioning to facial
emotional stimuli. Twenty-five female subjects were presented with slides of a happy face in one visual half-field (VHF),
and simultaneously a slide of an angry face in the other VHF, followed by shock as the unconditioned stimulus (UCS). To control
for effects of sensitization, a new stimulus, never associated with the UCS, was introduced in the extinction phase. Dependent
measures were phasic heart rate responses (HR) and skin conductance responses (SCR). The HR results showed a significant right
hemisphere effect for the CS-UCS association, that was not attributable to UCS sensitization. No significant effects were
found for the SCRs. The basic HR finding was a right hemisphere superiority for learning of a conditioned association. 相似文献
109.
110.
Fumiko Samejima 《Psychometrika》1993,58(2):195-209
Samejima has recently given an approximation for the bias function for the maximum likelihood estimate of the latent trait in the general case where item responses are discrete, generalizing Lord's bias function in the three-parameter logistic model for the dichotomous response level. In the present paper, observations are made about the behavior of this bias function for the dichotomous response level in general, and also with respect to several widely used mathematical models. Some empirical examples are given. 相似文献