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901.
In an experiment measuring event-related brain potentials (ERPs), single-letter targets were preceded by briefly presented
masked letter primes. Name and case consistency were manipulated across primes and targets so that the prime was either the
same letter as the target (or not), and was presented in the same case as the target (or not). Separate analyses were performed
for letters whose upper- and lowercase forms had similar features (or not). The results revealed an effect of prime-target
visual similarity between 120 and 180 msec, an effect of case-specific letter identity between 180 and 220 msec, and an effect
of case-independent letter identity between 220 and 300 msec. We argue that these ERP results reflect processing in a hierarchical
system for letter recognition that involves both case-specific and case-independent representations of alphabetic stimuli. 相似文献
902.
People often use recollection to avoid false memories. At least two types of recollection-based monitoring processes can be identified in the literature. Recall-to-reject is based on the recall of logically inconsistent information (which disqualifies the false event from having occurred), whereas the distinctiveness heuristic is based on the failure to recall to-be-expected information (which is diagnostic of non-occurrence). We attempted to investigate these hypothetical monitoring processes in a single task, as a first step at delineating the functional relationship between them. By design, participants could reject familiar lures by (1) recalling them from a to-be-excluded list (recall-to-reject) or (2) realising the absence of expected picture recollections (the distinctiveness heuristic). Both manipulations reduced false recognition in young adults, suggesting that these two types of monitoring were deployed on the same test. In contrast, older adults had limited success in reducing false recognition with either manipulation, indicating deficits in recollection-based monitoring processes. Depending on how a retrieval task is structured, attempts to use one monitoring process might interfere with another, especially in older adults. 相似文献
903.
A brief self-report scale was developed to assess everyday performance failures arising directly or primarily from brief failures of sustained attention (attention-related cognitive errors-ARCES). The ARCES was found to be associated with a more direct measure of propensity to attention lapses (Mindful Attention Awareness Scale--MAAS) and to errors on an existing behavioral measure of sustained attention (Sustained Attention to Response Task--SART). Although the ARCES and MAAS were highly correlated, structural modelling revealed the ARCES was more directly related to SART errors and the MAAS to SART RTs, which have been hypothesized to directly reflect the lapses of attention that lead to SART errors. Thus, the MAAS and SART RTs appear to directly reflect attention lapses, whereas the ARCES and SART errors reflect the mistakes these lapses are thought to cause. Boredom proneness was also assessed by the BPS, as a separate consequence of a propensity to attention lapses. Although the ARCES was significantly associated with the BPS, this association was entirely accounted for by the MAAS, suggesting that performance errors and boredom are separate consequences of lapses in attention. A tendency to even extraordinarily brief attention lapses on the order of milliseconds may have far-reaching consequences not only for safe and efficient task performance but also for sustaining the motivation to persist in and enjoy these tasks. 相似文献
904.
Evans JS 《Psychonomic bulletin & review》2006,13(3):378-395
An extensively revised heuristic-analytic theory of reasoning is presented incorporating three principles of hypothetical
thinking. The theory assumes that reasoning and judgment are facilitated by the formation of epistemic mental models that
are generated one at a time (singularity principle) by preconscious heuristic processes that contextualize problems in such
a way as to maximize relevance to current goals (relevance principle). Analytic processes evaluate these models but tend to
accept them unless there is good reason to reject them (satisficing principle). At a minimum, analytic processing of models
is required so as to generate inferences or judgments relevant to the task instructions, but more active intervention may
result in modification or replacement of default models generated by the heuristic system. Evidence for this theory is provided
by a review of a wide range of literature on thinking and reasoning. 相似文献
905.
Handley SJ Evans JS Thompson VA 《Journal of experimental psychology. Learning, memory, and cognition》2006,32(3):559-569
Under the suppositional account of conditionals, when people think about a conditional assertion, "if p then q," they engage in a mental simulation in which they imagine p holds and evaluate the probability that q holds under this supposition. One implication of this account is that belief in a conditional equates to conditional probability [P(q/p)]. In this paper, the authors examine a further implication of this analysis with respect to the wide-scope negation of conditional assertions, "it is not the case that if p then q." Under the suppositional account, nothing categorically follows from the negation of a conditional, other than a second conditional, "if p then not-q." In contrast, according to the mental model theory, a negated conditional is consistent only with the determinate state of affairs, p and not-q. In 4 experiments, the authors compare the contrasting predictions that arise from each of these accounts. The findings are consistent with the suppositional theory but are incongruent with the mental model theory of conditionals. 相似文献
906.
Cognitive diagnosis models are constrained (multiple classification) latent class models that characterize the relationship of questionnaire responses to a set of dichotomous latent variables. Having emanated from educational measurement, several aspects of such models seem well suited to use in psychological assessment and diagnosis. This article presents the development of a new cognitive diagnosis model for use in psychological assessment--the DINO (deterministic input; noisy "or" gate) model--which, as an illustrative example, is applied to evaluate and diagnose pathological gamblers. As part of this example, a demonstration of the estimates obtained by cognitive diagnosis models is provided. Such estimates include the probability an individual meets each of a set of dichotomous Diagnostic and Statistical Manual of Mental Disorders (text revision [DSM-IV-TR]; American Psychiatric Association, 2000) criteria, resulting in an estimate of the probability an individual meets the DSM-IV-TR definition for being a pathological gambler. Furthermore, a demonstration of how the hypothesized underlying factors contributing to pathological gambling can be measured with the DINO model is presented, through use of a covariance structure model for the tetrachoric correlation matrix of the dichotomous latent variables representing DSM-IV-TR criteria. 相似文献
907.
Neuroeconomics: cross-currents in research on decision-making 总被引:1,自引:0,他引:1
Despite substantial advances, the question of how we make decisions and judgments continues to pose important challenges for scientific research. Historically, different disciplines have approached this problem using different techniques and assumptions, with few unifying efforts made. However, the field of neuroeconomics has recently emerged as an inter-disciplinary effort to bridge this gap. Research in neuroscience and psychology has begun to investigate neural bases of decision predictability and value, central parameters in the economic theory of expected utility. Economics, in turn, is being increasingly influenced by a multiple-systems approach to decision-making, a perspective strongly rooted in psychology and neuroscience. The integration of these disparate theoretical approaches and methodologies offers exciting potential for the construction of more accurate models of decision-making. 相似文献
908.
We examined activation of concepts during analogical reasoning. Subjects made either analogical judgments or categorical judgments about four-word sets. After each four-word set, they named the ink color of a single word in a modified Stroop task. Words that referred to category relations were primed (as indicated by longer response times on Stroop color naming) subsequent to analogical judgments and categorical judgments. This finding suggests that activation of category concepts plays a fundamental role in analogical thinking. When colored words referred to analogical relations, priming occurred subsequent to analogical judgments, but not to categorical judgments, even though identical four-word stimuli were used for both types of judgments. This finding lends empirical support to the hypothesis that, when people comprehend the analogy between two items, they activate an abstract analogical relation that is distinct from the specific content items that compose the analogy. 相似文献
909.
Monitoring of ongoing processing plays a critical role in regulating cognitive function. Two event-related potential components, the error-related negativity (ERN) and N2, have been proposed to reflect this monitoring function. Specifically, it has been suggested that both components reflect the role of anterior cingulate cortex (ACC) in monitoring for the occurrence of response conflict. This view appears to be challenged by findings that alcohol consumption and lesions in ACC have dissociable effects on the ERN and N2. Using a computational model, the present research demonstrates that the conflict-monitoring theory can account for these dissociations in terms of the dissociable effects of alcohol and ACC lesions on processing of relevant stimulus information (which determines ERN amplitude) and processing of irrelevant, distracting information (which determines N2 amplitude). The simulation results suggest new interpretations of the cognitive deficits caused by alcohol consumption (impaired stimulus processing) and ACC lesions (impaired attentional control). 相似文献
910.
Research suggests that the well-being of members of stigmatized groups is related to the ways that individuals understand, evaluate, and respond to their devalued collective identity. The present study extends this line of inquiry by investigating collective identity in the context of romantic relationship functioning, focusing on same-sex couples as a type of stigmatized relationship. In this cross-sectional study, the authors examined four identity-related variables (internalized homonegativity, stigma sensitivity, identity confusion, and identity superiority) in a sample of 274 female and 187 male same-sex couples. Results provided evidence of identity similarity between partners, particularly for internalized homonegativity and identity superiority. Each of the identity variables was associated with relationship quality, and actor effects of identity on quality were more common than partner effects. Perceived identity similarity mediated some of the links found between identity and quality and was positively associated with relationship quality regardless of actor identity. 相似文献