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Biases in probabilistic reasoning are affected by alterations in the presentation of judgment tasks. In our experiments, students made likelihood judgments that an event was produced by various causes. These judgments were made in terms of probability, relative frequency or absolute frequency on a full or a pruned list of causes. When they had little personal experience of the event (causes of death), the pruning bias was smaller with relative frequencies than with absolute frequencies or probabilities. When they had more personal experience of the event (missing a lecture), the bias was less with both types of frequency than with probability but still lowest with relative frequency. We suggest that likelihood information is usually stored as relative frequencies when it has been obtained from public sources but that it is based on event counts when it is derived from personal experience. Copyright © 2000 John Wiley & Sons, Ltd. 相似文献
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Isabel C. H. Clare Gisli H. Gudjonsson Philippe M. Harari 《Journal of community & applied social psychology》1998,8(5):323-329
The Criminal Justice and Public Order Act 1994 (England and Wales) modified suspects' right to silence during police questioning and required a new police caution. The current 37-word caution was introduced after it was found that a proposed 60-word draft version was too complex. The results of the present study show that, although more succinct, the current caution is no easier to explain. Even under optimal conditions, when the participants could focus on each sentence in turn, only 1 in 10 of the general population (n=15), 6 in 10 of A-level students preparing for university (n=72) and 9 in 10 police officers (n=21) demonstrated their understanding by explaining all three sentences correctly. For all groups, the difficulties were more marked when the caution was presented in its entirety, as would happen in real life. The complexity of the caution has serious implications for suspects in police detention. © 1998 John Wiley & Sons, Ltd. 相似文献
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Contract cheating, or plagiarism via paid ghostwriting, is a significant academic ethical issue, especially as reliable methods for its prevention and detection in students’ assignments remain elusive. Contract cheating in academic assessment has been the subject of much recent debate and concern. Although some scandals have attracted substantial media attention, little is known about the likely prevalence of contract cheating by students for their university assignments. Although rates of contract cheating tend to be low, criminological theories suggest that people who employ ghostwriters for their assignments are likely to re-offend, and little is known about re-offence rates in this form of academic misconduct. We combined previously-collected datasets (N = 1378) and conducted additional, and previously-unreported, analyses on self-report measures of contract cheating prevalence. We found that few students (3.5%), on aggregate, ever engaged in contract cheating but this varied substantially among samples (from 0.3% to 7.9%). Of those who ever engaged in contract cheating, 62.5% did so more than once. The data also suggested that engagement in contract cheating is influenced by opportunity. These figures may help policy makers, and researchers who are creating contract cheating detection methods, to estimate base rates of contract cheating and the likelihood of re-offence. 相似文献
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Gareth J. Williams Clare Wood 《Advances in cognitive psychology / University of Finance and Management in Warsaw》2012,8(4):267-280
The role of suprasegmental information in reading processes is a growing area of
interest, and sensitivity to lexical stress has been shown to explain unique
variance in reading development. However, less is known about its role in
skilled reading. This study aimed to investigate the acoustic features of
suprasegmental information using a same/different cross-modal matching task.
Sixty-four adult participants completed standardized measures of reading
accuracy, reading speed, and comprehension and performed an experimental task.
The experimental task required the participants to identify whether non-speech
acoustic sequences matched the characteristics of written words. The findings
indicated differences in responses depending on where the lexical stress was
required for the word. Moreover, evidence was found to support the view that
amplitude information is part of the word knowledge retrieval process in skilled
reading. The findings are discussed relative to models of reading and the role
of lexical stress in lexical access. 相似文献