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The status of blocking in human eyelid conditioning was examined in a series of four experiments modelled on rabbit nictitating membrane (NMR) procedures to ensure comparability with the animal literature. The first three employed Tones and Lights as CSs and a preliminary experiment established equivalent salience of these stimuli. The fourth employed all light conditioned stimuli (CSs). Each of the experiments balanced order of presentation of blocked and non-blocked stimuli in extinction; each yielded reliable evidence of blocking tested in extinction. However, the blocking effects were attenuated or abolished in those groups receiving the to-be-blocked stimulus on the first trial in extinction. The results show blocking to be a relatively weak, easily disrupted phenomenon compared with rabbit studies. They suggest that rapid re-appraisal of stimulus significance plays a more important role in human subjects than has been observed in animal studies. 相似文献
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A. B. Levey 《Behaviour research and therapy》1975,13(4):221-226
Human behaviour includes an important component which may conveniently be called evaluative. Using postcard reproductions as stimulus materials, 10 volunteer subjects selected the two pictures most liked and the two most disliked. These were then used as UCSs with appropriate controls from the neutral category. The conditioning hypothesis—that a neutral stimulus followed by a positively or negatively valued stimulus will acquire the evaluative weight of the second stimulus—was supported at a highly statistically significant level. The effect of negative evaluation was demonstrably stronger than that for positive evaluation, a result consistent with our knowledge of aversive conditioning. The possibility is discussed that evaluation of the UCS by the subject, shown to be a sufficient condition for learning, may also be the only necessary condition. This would imply a model of conditioning based on affective evaluation rather than on response production. 相似文献
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J. David Smith Jennifer J. R. Johnston Robert D. Musgrave Alexandria C. Zakrzewski Joseph Boomer Barbara A. Church F. Gregory Ashby 《Attention, perception & psychophysics》2014,76(5):1473-1484
An influential theoretical perspective describes an implicit category-learning system that associates regions of perceptual space with response outputs by integrating information preattentionally and predecisionally across multiple stimulus dimensions. In this study, we tested whether this kind of implicit, information-integration category learning is possible across stimulus dimensions lying in different sensory modalities. Humans learned categories composed of conjoint visual–auditory category exemplars comprising a visual component (rectangles varying in the density of contained lit pixels) and an auditory component (in Exp. 1, auditory sequences varying in duration; in Exp. 2, pure tones varying in pitch). The categories had either a one-dimensional, rule-based solution or a two-dimensional, information-integration solution. Humans could solve the information-integration category tasks by integrating information across two stimulus modalities. The results demonstrated an important cross-modal form of sensory integration in the service of category learning, and they advance the field’s knowledge about the sensory organization of systems for categorization. 相似文献
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Brian C. Holtz Robert E. Ployhart Alexandria Dominguez 《International Journal of Selection & Assessment》2005,13(1):75-86
The resurgence of personality tests in selection has sparked interest in factors that may increase the utility and acceptability of these tests. Following a justice framework, the present study explores two possible methods for improving the psychometric properties and test‐taker perceptions of a widely used measure of personality, the NEO‐Five Factor Inventory. The first manipulation altered respondents' frame‐of‐reference (FOR) by adding “at‐work” tags to the personality test. The second provided information about the validity and appropriateness of the personality test for selection. Under the controlled setting of a laboratory experiment, participants (n=345) were randomly assigned to one of the conditions in the following between‐subjects design: 2 (FOR: work specific vs. generic) × 2 (information: validity vs. control). The FOR manipulation produced consistent effects on the personality test responses, but in contrast to recent claims, produced no effect on test perceptions. Alternatively, the information manipulation primarily influenced job‐relatedness perceptions, but had a modest negative effect on the psychometric properties of the personality test. These results show some possibilities, and difficulties, for enhancing perceptions of personality tests. They also have important implications for justice theory because they suggest that interactions among the procedural justice rules may yield unexpected and contradictory effects. 相似文献
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Despite the general assumption that anaphoric inferences are necessary inferences, Levine, Guzmán, and Klin (2000) concluded that the probability of resolving noun phrase anaphors depends both on the degree of accessibility in memory of the antecedent concepts and the extent to which resolution is necessary to create a coherent discourse representation. Four experiments are presented in which the factors that influence readers' standard of coherence are investigated. We examine the hypothesis that readers are more likely to resolve anaphors that are perceived as salient; salience was manipulated both with a syntactic focusing structure (wh- clefts) and with the addition of prenominal adjectival modifiers. The results of a probe recognition time task provide support for the hypothesis that a variety of linguistic cues serve as mental processing instructions (Givón, 1992), which instruct readers as to how much attention to devote to processing. 相似文献
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Irene Martin A. B. Levey 《The Quarterly Journal of Experimental Psychology Section B: Comparative and Physiological Psychology》1991,43(3):233-256
Four eyelid conditioning experiments designed to be comparable to rabbit nictitating membrane (NMR) studies examined the blocking phenomenon in humans. All experiments utilized a within-subjects design, with Stage 1 of discrimination, Stage 2 of compound training, and a final test stage comparing responding to the blocked and non-blocked CSs. In two of the experiments (1 and 4) the comparison was made within subjects over all extinction trials. In Experiment 3 the test phase consisted of further reinforced training of the blocked and non-blocked CSs. These three experiments produced evidence of blocking when all extinction trials were entered into the analysis. Experiment 2, which involved a between-subjects comparison, failed to demonstrate the blocking effect. Wide variability both between and within subjects obscured the experimental effects. Post-experimental questionnaires designed to assess awareness of stimulus relations failed to identify a subjective blocking effect and showed no relationship to conditioned eyelid responding 相似文献