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151.
Arthur F. Kramer Nicholas D. Cassavaugh David E. Irwin Matthew S. Peterson Sowon Hahn 《Attention, perception & psychophysics》2001,63(6):952-968
In three experiments, we examined attentional and oculomotor capture by single and multiple abrupt onsets in a singleton search paradigm. Subjects were instructed to move their eyes as quickly as possible to a color singleton target and to identify a small letter located inside of it. In Experiment 1, taskirrelevant sudden onsets appeared simultaneously on half the trials with the presentation of the color singleton target. Response times (RTs) were longer when onsets appeared in the display regardless of the number of onsets. Eye-scan strategies were also disrupted by the appearance of the onset distractors, although the proportion of trials on which the eyes were directed to the onsets was the same regardless of the number of onsets. In Experiment 2, we manipulated the time of presentation of two taskirrelevant onsets in order to further examine whether multiple onsets would be attended and fixated prior to attending a color singleton target. Again, subjects made a saccade to a task-irrelevant onset on a substantial proportion of trials prior to fixating the target. However, saccades to the second onset were rare. Experiment 3 served as a replication of Experiment 1 but without the requirement for subjects to move their eyes to detect and identify the singleton target. The RT results were consistent with those in Experiment 1; dual onsets had no larger an effect on response speed than single onset distractors. These data are discussed in terms of the interaction between top-down and bottom-up control of attention and the eyes. 相似文献
152.
R. John Irwin Michael J. Hautus Margaret A. Francis 《Attention, perception & psychophysics》2001,63(6):1091-1100
Thesame-different experiment is popular for assessing perceptual performance, including the performance of people with neuropsychological deficits. Although the measurement of accuracy with this experiment is now well understood, the measurement of response bias remains problematic. Reformulating the decision space for the experiment can yield new bias indices that are analogous to, but numerically different from, those of the more familiar yesno experiment. Isobias curves that show how hit rate covaries with false alarm rate for constant bias but varying accuracy are presented for eight indices, and best-fitting parameters of the isobias functions are determined for a set of experimental data. The theoretical status of the bias indices and their relation to other formulations are reviewed. 相似文献
153.
Terence Irwin 《The Journal of Ethics》2001,5(1):73-97
Aristotle's account of vice presents a puzzle: (1) Viciouspeople must be guided by reason, since they act on decision(prohairesis), not on their non-rational desires. (2) And yet theycannot be guided by reason, since they are said to pay attention totheir non-rational part and not to live in accordance with reason. Wecan understand the conception of vice the reconciles these two claims,once we examine Aristotle's account of (a) the pursuit of the fine andof the expedient; (b) the connexion between vice and the pursuit ofpleasure; (c) the particular kind of regret to which the vicious personis subject. 相似文献
154.
In this paper, we describe two experiments in which we assessed the validity of phased narrowing, a new process tracing technique
designed to help researchers better understand multiattribute evaluation processes. Specifically, in Experiment 1 we examined
the distribution of choices across successive decision stages and the attitudes and perceptions of the decision maker. In
Experiment 2, we examined a variety of process data generated via a computerized information monitoring program called Mouse-Trace.
Comparisons, in all cases, are made between experimental conditions that do and do not require decision makers to narrow their
choices across successive stages. Taken together, the data indicate that there is little evidence to doubt the validity of
a less restrictive version of phased narrowing which allows subjects to choose their own number of options to include at each
stage. These results are encouraging for researchers who plan to use the technique to study decision making in its natural
context. 相似文献
155.
该文认为处于萌芽状态的进化心理学作为一个新的心理学分支学科对人类心理运行机制提出了一些基本的解释与预测。该文也讨论了进化心理学研究遭受到的两种批评,其一是文化的重要性没有得到重视;其二是进化历史是“假想的故事”。同时作者认为完整地理解心理学研究课题需要进行最终水平的因果分析,只有掌握与运用自然选择理论才能从最终水平上理解研究课题 相似文献
156.
Common and distinct factors in decision making under ambiguity and risk: A psychometric study of individual differences 总被引:2,自引:0,他引:2
Marco Lauriola Irwin P. Levin Stephanie S. Hart 《Organizational behavior and human decision processes》2007,104(2):130-149
The relation between decision making under ambiguity and risky decision making was examined. In Studies 1 and 2, choices under ambiguity were measured for a large sample receiving an Ellsberg-type Ambiguity-Probability Tradeoff Task. Participants with extreme scores were recruited for Part 2 of each study which consisted of a risky decision making task (Study 1) or a series of decisions under ambiguity in “real life” scenarios (Study 2). Despite a time gap of up to 2 months, individual differences in scores on Part 1 predicted scores on Part 2. In Study 3 participants received in a single session several risky decision making tasks, several measures of decision making under ambiguity, and several personality scales related to uncertainty and decision making style. Taken together, the findings support the existence of a stable dispositional trait to reduce uncertainty in decision making but also task-specific differences related to gains and losses. 相似文献
157.
Group‐level effects of forgiveness: Group cohesiveness and collective action in social dilemmas 下载免费PDF全文
Kyle Irwin Jo‐Ann Tsang Robert Carlisle Megan Johnson Shen 《European journal of social psychology》2014,44(4):280-286
Forgiveness research has predominately focused on individual/relational outcomes such as well‐being and closeness. Less research has examined group outcomes such as cohesiveness or collective action. Forgiveness studies have also emphasized the victim's or transgressor's perspective, neglecting the effects of forgiveness on ingroup members who have neither given nor received forgiveness. We theorize that forgiveness promotes collective action among ingroup members through group cohesiveness and that transgressors' apologetic reactions impact this process. In a laboratory experiment, 229 students (175 females) were led to believe they were in a social dilemma with three others. Some participants witnessed group members forgive an apologetic, obstinate, or neutral defector, whereas others witnessed an unforgiving response. Forgiveness of apologetic and neutral defectors increased later cooperation among ingroup members. This effect was generally mediated by group cohesiveness. Our findings suggest that forgiveness can impact cooperation on a group level, providing a path to successful resolutions to collective action problems. Copyright © 2014 John Wiley & Sons, Ltd. 相似文献
158.
Individual Differences in Risky Decision Making: A Meta‐analysis of Sensation Seeking and Impulsivity with the Balloon Analogue Risk Task 下载免费PDF全文
To represent the state‐of‐the‐art in an effort to understand the relation between personality and risk taking, we selected a popular decision task with characteristics that parallel risk taking in the real world and two personality traits commonly believed to influence risk taking. A meta‐analysis is presented based on 22 studies of the Balloon Analogue Risk Task from which correlations with sensation seeking and impulsivity assessments could be obtained. Results calculated on a total of 2120 participants showed that effect size for the relation of sensation seeking with risk taking was in the small–moderate range ( = .14), whereas the effect size for impulsivity was just around the small effect size threshold ( = .10). Although we considered participants' demographics as moderators, we found only significantly larger effect sizes for the older adolescents and young adults compared with other ages. The findings of the present review supported the view that inconsistencies in personality–risk research were mostly due to random fluctuations of specific effect sizes, rather than to lack of theoretical ties or to measurement unreliability. It is also concluded that studies aimed at relating individual differences in personality to performance in experimental decision tasks need an appropriate sample size to achieve the power to produce significant results. Copyright © 2013 John Wiley & Sons, Ltd. 相似文献
159.
The visual world appears stable despite frequent retinal image movements caused by saccades. Many theories of visual stability assume that extraretinal eye position information is used to spatially adjust perceived locations across saccades, whereas others have proposed that visual stability depends upon coding of the relative positions of objects. McConkie and Currie (1996) proposed a refined combination of these views (called the Saccade Target Object Theory) in which the perception of stability across saccades relies on a local evaluation process centred on the saccade target object rather than on a remapping of the entire scene, with some contribution from memory for the relative positions of objects as well. Three experiments investigated the saccade target object theory, along with an alternative hypothesis that proposes that multiple objects are updated across saccades, but with variable resolution, with the saccade target object (by virtue of being the focus of attention before the saccade and residing near the fovea after the saccade) having priority in the perception of displacement. Although support was found for the saccade target object theory in Experiment 1, the results of Experiments 2 and 3 found that multiple objects are updated across saccades and that their positions are evaluated to determine perceived stability. There is an advantage for detecting displacements of the saccade target, most likely because of visual acuity or attentional focus being better near the fovea, but it is not the saccade target alone that determines the perception of stability and of displacements across saccades. Rather, multiple sources of information appear to contribute. 相似文献
160.
Irwin SA Swain RA Christmon CA Chakravarti A Weiler IJ Greenough WT 《Neurobiology of learning and memory》2000,73(1):87-93
The Fragile-X mental retardation protein, the protein absent in Fragile-X syndrome, is synthesized near synapses upon neurotransmitter activation. Humans and mice lacking this protein exhibit abnormal dendritic spine lengths and numbers. Here we investigated Fragile-X protein levels in animals exposed to behavioral paradigms that induce neuronal morphological change. Fragile-X protein immunoreactivity was examined in visual cortices of rats reared in a complex environment for 10 or 20 days, motor cortices of rats trained on motor-skill tasks for 3 or 7 days, and either visual or motor cortices of inactive controls. Rats exposed to a complex environment for 20 days or trained for 7 days on motor-skill tasks exhibited increased Fragile-X protein immunoreactivity in visual or motor cortices, respectively. These results provide the first evidence for a behaviorally induced alteration of Fragile-X protein expression and are compatible with previous findings suggesting synaptic regulation of its expression. These results also strengthen the association of Fragile-X mental retardation protein expression with the alteration of synaptic structure. 相似文献