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51.
Using a crossover recognition memory testing paradigm, we tested whether the effects on face recognition of the memorability component of face typicality (Vokey & Read, 1992, 1995) are due primarily to the encoding process occurring during study or to the retrieval process occurring at test. At study, faces were either veridical in form or at moderate (Experiment 1) or extreme (Experiment 2) levels of caricature. The variable of degree of facial caricature at study was crossed with the degree of caricature at test. The primary contribution of increased memorability to increased hit rate was through increased distinctiveness at study. Increased distinctiveness at test contributed to substantial reductions in the false alarm rate, too. Signal detection analyses confirmed that the mirror effects obtained were primarily stimulus/memory-based, rather than decision-based. Contrary to the conclusion of Vokey and Read (1992), we found that increments in face memorability produced increments in face recognition that were due at least as much to enhanced encoding of studied faces as they were to increased rejection of distractor faces. 相似文献
52.
Five search experiments investigated whether the apparent size of objects is, like their retinal size, coded in preattentive vision. Observers searched for a target circle that was either larger or smaller than distractor circles, with both types of test circles surrounded by context circles modulating apparent size (i.e., the Ebbinghaus illusion). The size ratio between the test and the context circles was manipulated in such a way that the test circles were surrounded by, for example, smaller context circles (making the larger target appear even larger) or by larger context circles (making the smaller distractors appear even smaller). Under optimal conditions, the detection reaction times were independent of the number of test circles in the display, and the Ebbinghaus illusion facilitated the detection of the target even in comparison with control conditions without any context circles. This finding is consistent with preattentive, spatially parallel processing of apparent size. 相似文献
53.
Recent studies on perceptual organization in humans claim that the ability to represent a visual scene as a set of coherent
surfaces is of central importance for visual cognition. We examined whether this surface representation hypothesis generalizes
to a non-mammalian species, the barn owl (Tyto alba). Discrimination transfer combined with random-dot stimuli provided the appropriate means for a series of two behavioural
experiments with the specific aims of (1) obtaining psychophysical measurements of figure–ground segmentation in the owl,
and (2) determining the nature of the information involved. In experiment 1, two owls were trained to indicate the presence
or absence of a central planar surface (figure) among a larger region of random dots (ground) based on differences in texture.
Without additional training, the owls could make the same discrimination when figure and ground had reversed luminance, or
were camouflaged by the use of uniformly textured random-dot stereograms. In the latter case, the figure stands out in depth
from the ground when positional differences of the figure in two retinal images are combined (binocular disparity). In experiment 2,
two new owls were trained to distinguish three-dimensional objects from holes using random-dot kinematograms. These birds
could make the same discrimination when information on surface segmentation was unexpectedly switched from relative motion
to half-occlusion. In the latter case, stereograms were used that provide the impression of stratified surfaces to humans
by giving unpairable image features to the eyes. The ability to use image features such as texture, binocular disparity, relative
motion, and half-occlusion interchangeably to determine figure–ground relationships suggests that in owls, as in humans, the
structuring of the visual scene critically depends on how indirect image information (depth order, occlusion contours) is allocated between different surfaces.
Electronic Publication 相似文献
54.
Hermann Brandsttter 《欧洲人格杂志》1994,8(2):75-93
The report is based on the data of seven studies (altogether 188 persons varying in gender, age, and education level) with the author's time-sampling diary, by which the subjects record their momentary mood, the behaviour setting, other persons present, activities, causal attributions of experienced emotions, and affected motives about four times a day for a period of 30 days. For each pattern of four 16PF second-order factors (median split), the relative frequencies of references to six classes of motives (i.e. the personal motive profiles) and for each of 16 behaviour settings, the relative frequencies by which each of those motives was satisfied in the whole sample of persons (environmental motive profiles) were derived from the diary data. The degree of motivational person–environment fit (P–E fit; correlation of personal and environmental motive profiles) was calculated for each combination of personality structure and behaviour setting. As predicted, a person's well-being in a behaviour setting clearly depends on the motivational P–E fit which explains the intra-individual variance of well-being (across situations) and the intra-situational variance (across persons) in addition to the variance explained by emotional stability and extraversion. 相似文献
55.
Hermann Brandsttter Volker Klein-Moddenborg 《European journal of social psychology》1979,9(4):363-380
The data of two experiments of dyadic group discussion have been reanalysed. An extended proportional change model was designed to explain the actual process of attitude change. The model is defined by two parameters. The first represents the impact of single pro-arguments and single con-arguments on the attitude or decision preference. The second describes the resistance to further change that increases with the distance from the initial position. It was hypothesized that the first parameter should be higher and the second lower, with a similar partner than with a dissimilar one. The prediction was confirmed for the first parameter only. A comparison of the extended proportional change model to related models concludes the report. 相似文献
56.
Dana RH Aguilar-Kitibutr A Diaz-Vivar N Vetter H 《Journal of personality assessment》2002,79(2):207-215
An earlier training model emphasized systematic feedback on accuracy of concepts contained in student assessment reports prepared with common data sets from standard tests. This feedback resulted in consistent increments in concept agreements between reports prepared by students and more experienced assessors. This model was applied in courses with multicultural students by contrasting standard and multicultural assessment and using data sets from multicultural assessees. These students experienced greater difficulty in demonstrating consistent increments of agreement in report concepts due to uneven knowledge of specific cultures, inapplicability of available norms, and interpretation issues. The effectiveness of combining standard and multicultural training should be compared with conventional standard training followed by culturally focused specialized assessment courses. 相似文献
57.
Speech perception deficits in Parkinson's disease: underestimation of time intervals compromises identification of durational phonetic contrasts 总被引:1,自引:0,他引:1
Besides motor, vegetative, and cognitive signs, patients suffering from Parkinson's disease (PD) may show distinct perceptual deficits such as underestimation of time intervals extending across several seconds. Assuming this impairment also to affect the domain of tens of milliseconds, disrupted encoding of the acoustic speech signal with respect to segment durations conveying linguistic information must be expected. To test this hypothesis, 10 PD patients and matched controls performed an identification task using a series of 10 stimuli derived from the utterance "Boten" (/bo:tn/, 'messengers'; produced with nasal plosion) by exclusive manipulation of occlusion length (110-20 ms in steps of 10 ms). Under these conditions, word-medial silence cues the voicing category of the respective stop consonant. Seven PD subjects showed normal identification curves, i.e., categorized the shortest and longest stimuli with high probability each as the minimal pair cognates "Boden" and "Boten," respectively. In contrast, the remaining three patients labeled all items across the complete range of occlusion lengths as "Boden." A subsequent experiment found a horizontal shift of the identification curves toward larger signal durations (> 120 ms) in these three subjects. Bilateral cerebellar degeneration has been found to yield a different response pattern, i.e., near-chance level of performance. Considering recent information-processing models of scalar interval timing, striatal disorders seem to slow down an oscillatory pacemaker, whereas cerebellar dysfunctions may impair comparison of measured durations with stored reference memory traces. 相似文献
58.
Barbara Vetter 《Philosophical Studies》2016,173(10):2681-2700
59.
In a representative panel study, citizens of Leipzig (East Germany) were interviewed in 1993 and 1996 about their incentives for and participation in political protest activities. Conscientiousness, neuroticism, agreeableness, openness to experience, and extraversion (the Big Five) were measured with 16 bipolar adjectives. The present report supplements a previous work of the authors that drew on the theories of rational choice and collective action and conceived of incentives as proximal causes and personality dispositions as distant causes of political protest. Based on structural equation modelling (SEM), the present article deals with the respondents' recurrent reports on protest incentives and protest acts as indicators of the latent construct protest propensity that is according to the predictions directly influenced by openness to experience (O+), agreeableness (A?), neuroticism (N?), and reciprocity orientation (N*E+) with 35% explained variance. 相似文献
60.
Prof. Dr. Dieter Dölling Prof. Dr. Dieter Hermann PD Dr. Christian Laue Wolfgang Weninger 《Forensische Psychiatrie, Psychologie, Kriminologie》2014,8(2):72-83
The article shows that the registered juvenile delinquency has decreased in recent years. Serious violent crime partially exists, but this is only a small part of the overall juvenile delinquency. Forms of appearance of these violent crimes are outlined. With the help of a dark field study it is illustrated that there is a great variety of delinquency among young people. There are young people showing mostly law-abiding behavior, infrequent offenders and a group with a significant burden of crimes. 相似文献