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461.
Curt A. Carlson Alyssa R. Jones Charles A. Goodsell Maria A. Carlson Dawn R. Weatherford Jane E. Whittington Robert F. Lockamyeir 《Applied cognitive psychology》2019,33(6):1091-1102
It is important to consider the two parameters of signal detection theory, discriminability and response bias, when evaluating eyewitness identification from simultaneous lineups. On the basis of the diagnostic feature‐detection hypothesis, we tested a method for increasing discriminability that encourages eyewitnesses to carefully rank each lineup member based on match to their memory for a perpetrator. This procedure increased empirical discriminability and also eliminated a response bias that is largely overlooked in the literature: Participants were biased to choose from the top row of the six‐pack (2 × 3) lineup commonly used in the United States. We argue that suspect position in the simultaneous lineup is an important variable to consider for researchers and the criminal justice system. We also encourage researchers to test the ranking procedure to determine if such a simple set of instructions could be utilized by police to help eyewitnesses correctly sort innocent versus guilty suspects. 相似文献
462.
采用2Wingdings 2MC@2Wingdings 2MC@2混合设计和相关分析法,考察个体的分析性认知风格对其在完成有、无冲突的推理判断任务时的逻辑反应倾向和冲突探查过程的影响。结果表明分析性认知风格不会直接影响被试完成推理任务的逻辑反应倾向性,高、低分析性认知风格倾向组被试在逻辑反应正确率上不存在显著差异; 但对个体的冲突探查过程会有影响,高、低认知风格倾向组被试在反应自信率上存在显著差异,且冲突探查大小与分析性认知风格显著负相关,这一结果表明那些高分析性认知风格倾向的个体在完成冲突任务时,更可能探查到刻板反应与遵从逻辑规则做出的反应之间的冲突。 相似文献
463.
We introduce a Fourier transformation technique that enables one to derive closed-form expressions of performance measures (e.g., hit and false alarm rates) of simulation-based models of recognition memory. Application of the technique is demonstrated using the bind cue decide model of episodic memory (BCDMEM; [Dennis, S., & Humphreys, M.S. (2001). A context noise model of episodic word recognition. Psychological Review, 108(2), 452-478]). In addition to reducing the time required to test the model, which for models like BCDMEM can be excessive, asymptotic expressions of the measures reveal heretofore unknown properties of the model, such as model predictions being dependent on vector length. 相似文献
464.
The preview benefit from prior exposure of response-irrelevant (distracter) objects in visual search has been accounted for
in terms of top-down inhibition (i.e. visual marking), bottom-up abrupt onset capture, or asynchrony-dependent perceptual
segregation. We assess the relative contribution of abrupt onset and visual marking in a paradigm combining visual search
with a visual working memory task. We investigated time-based selection of multiple objects for storage in visual working
memory, using a change detection paradigm (Luck and Vogel in Nature 390:279–281, 1997) with distracter preview. We varied preview exposure (short vs. long), in a series of three experiments. The contribution
of asynchrony-related perceptual segregation was assessed across experiments by varying the complexity of the stimuli (colored
squares, oriented bars and oriented T-shapes) and the type of change detection (color or orientation), resulting in different
levels of perceptual segregation between visual elements. The results suggest that bottom-up abrupt onset, visual marking
and perceptual segregation factors co-operate in time-based selection for storage in visual working memory. 相似文献
465.
Bryan?R.?LoneyEmail author John?P.?Kline Thomas?E.?Joiner Paul?J.?Frick Steven?D.?LaRowe 《Journal of psychopathology and behavioral assessment》2005,27(1):1-9
This study used a computer-based emotional word-recognition task to assess the emotional processing styles of repressive–defensive youth. A hypothesis was tested proposing that adolescent repressive–defensive coping style is associated with rapid engagement and disengagement of emotional stimuli (negative and positive). Data were collected on a male adolescent sample enrolled in a juvenile diversion program allowing for the comparison of anxious, low-anxious, and repressive–defensive youth. Consistent with prediction, repressive–defensive participants exhibited facilitated responding to emotional relative to neutral word stimuli across valence category (i.e., positive and negative). In contrast, anxious participants exhibited a unique pattern of facilitated responding to positive word stimuli. The current findings represent a first attempt at investigating the processing impairments of repressive–defensive coping style in a nonadult sample. Results are interpreted in light of broader adult and child research findings on emotional processing and affective disturbance. 相似文献
466.
This paper argues that the inappropriate framing and implementation of plagiarism detection systems in UK universities can unwittingly construct international students as ‘plagiarists’. It argues that these systems are often implemented with inappropriate assumptions about plagiarism and the way in which new members of a community of practice develop the skills to become full members of that community. Drawing on the literature and some primary data it shows how expectations, norms and practices become translated and negotiated in such a way that legitimate attempts to conform with the expectations of the community of practice often become identified as plagiarism and illegitimate attempts at cheating often become obscured from view. It argues that this inappropriate framing and implementation of plagiarism detection systems may make academic integrity more illusive rather than less. It argues that in its current framing – as systems for ‘detection and discipline’ – plagiarism detection systems may become a new micro-politics of power with devastating consequences for those excluded. 相似文献
467.
A model of conditional discrimination performance (Davison & Nevin, 1999) is combined with the notion that unmeasured attending to the sample and comparison stimuli, in the steady state and during disruption, depends on reinforcement in the same way as predicted for overt free-operant responding by behavioral momentum theory (Nevin & Grace, 2000). The rate of observing behavior, a measurable accompaniment of attending, is well described by an equation for steady-state responding derived from momentum theory, and the resistance to change of observing conforms to predictions of momentum theory, supporting a key assumption of the model. When probabilities of attending are less than 1.0, the model accounts for some aspects of conditional-discrimination performance that posed problems for the Davison-Nevin model: (a) the effects of differential reinforcement on the allocation of responses to the comparison stimuli and on accuracy in several matching-to-sample and signal-detection tasks where the differences between the stimuli or responses were varied across conditions, (b) the effects of overall reinforcer rate on the asymptotic level and resistance to change of both response rate and accuracy of matching to sample in multiple schedules, and (c) the effects of fixed-ratio reinforcement on accuracy. Some tests and extensions of the model are suggested, and the role of unmeasured events in behavior theory is considered. 相似文献
468.
In the signal detection paradigm, the non-parametric index of sensitivity A′, as first introduced by Pollack and Norman (1964), is a popular alternative to the more traditional d′ measure of sensitivity. Smith (1995) clarified a confusion about the interpretation of A′ in relation to the area beneath proper receiver operating characteristic (ROC) curves, and provided a formula (which he called A′′) for this commonly held interpretation. However, he made an error in his calculations. Here, we rectify this error by providing the correct formula (which we call A) and compare the discrepancy that would have resulted. The corresponding measure for bias b is also provided. Since all such calculations apply to “proper” ROC curves with non-decreasing slopes, we also prove, as a separate result, the slope-monotonicity of ROC curves generated by likelihood-ratio criterion.This revised article was published online in August 2005 with the PDF paginated correctly. 相似文献
469.
In two detection experiments, university students reported whether the second of two sequentially presented tones was longer or shorter than the first by responding to stimuli presented on a touch screen. Stimulus disparity and response disparity were manipulated to compare their effects on measures of discrimination and response bias when the reinforcement ratio for correct responses was asymmetric. Choice stimuli consisted of squares filled with different pixel densities. Response disparity was manipulated by varying the difference in density between the two choice stimuli. In both experiments, decreasing stimulus disparity reduced discrimination but had no consistent effect on bias. Decreasing response disparity also reduced discrimination in both experiments, and often reduced estimates of bias. The effects of response disparity on bias were most clear in Experiment 2, in which a greater overall level of response disparity was arranged. The data show that, like corresponding research with pigeons, detection performance of human subjects can be conceptualized as discriminated operants. 相似文献
470.
在一个模拟“杀人——侦探”游戏情境中,被试先完成模拟杀人任务,在随后的测谎阶段使用有反馈的ERP测谎范式,以反馈的形式告知被试测谎结果(“+0.5”或“-2”,分别代表“撒谎逃过检测”或“撒谎被发现”)时的脑内时程动态变化。结果发现,在反馈出现后的200~300ms时间段,表示“撒谎被抓住”比“撒谎逃过检测”的反馈信息诱发了一个更正性的ERP成分(P200-300),在300~400ms时间段,两种反馈诱发的ERP成分(P300)没有差异,而在450~500ms时间段, “撒谎逃过检测”比“撒谎被抓住”的反馈信息诱发了一个更负性的ERP成分(N500),负性反馈没有诱发FRN。这些结果表明:P200-300、P300和N500都是与加工测谎结果信息有关的ERP成分。P200-300可能对测谎结果的效价(正性或负性)敏感;P300可能反映被试对测谎结果主观意义大小的评价;而N500可能反映测谎结果所导致的大脑皮层兴奋程度。 相似文献