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11.
We extended perceptual studies of the Brodatz set of textured materials. In the experiments, texture perception for different texture sets, viewing distances, or lighting intensities was examined. Subjects compared one pair of textures at a time. The main task was to rapidly rate all of the texture pairs on a number scale for their overall dissimilarities first and then for their dissimilarities according to six specified attributes (e.g., texture contrast). The implied dimensionality of perceptual texture space was usually at least four, rather than three. All six attributes proved to be useful predictors of overall dissimilarity, especially coarseness and regularity. The novel attribute texture lightness, an assessment of mean surface reflectance, was important when viewing conditions were wide-ranging. We were impressed by the general validity of texture judgments across subject, texture set, and comfortable viewing distances or lighting intensities. The attributes are nonorthogonal directions in four-dimensional perceptual space and are probably not narrow linear axes. In a supplementary experiment, we studied a completely different task: identifying textures from a distance. The dimensionality for this more refined task is similar to that for rating judgments, so our findings may have general application. 相似文献
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Proctor RW Cho YS 《Journal of experimental psychology. Human perception and performance》2001,27(2):466-471
When up and down stimuli are mapped to left and right keypresses or "left" and "right" vocalizations in a 2-choice reaction task, performance is often better with the up-right/down-left mapping than with the opposite mapping. J. J. Adam, B. Boon, F. G. W. C. Paas, and C. Umiltà (1998) presented evidence that the up-right/down-left advantage is obtained when trials are participant paced but not when they are computer paced. In all, 3 experiments are reported that show no difference in magnitude of the up-right/down-left advantage between computer-paced and participant-paced conditions. The advantage was eliminated, however, in Experiment 3 when a response deadline was imposed. Response speed, rather than participant or computer pacing of trials, is crucial. 相似文献
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Cho YS Proctor RW 《Journal of experimental psychology. Human perception and performance》2001,27(2):472-484
When up and down stimuli are mapped to left and right keypresses or "left" and "right" vocalizations in a 2-choice reaction task, performance is often better with the up-right/down-left mapping than with the opposite mapping. This study investigated whether performance is influenced by the type of initiating action. In all, 4 experiments showed the up-right/down-left advantage to be reduced when the participant's initiating action was a left response compared with when it was a right response. This reduction occurred when the initiating action and response were both keypresses, both were spoken location names, and one was a spoken location name and the other a keypress. The results are consistent with the view that the up-right/down-left advantage is due to asymmetry in coding the alternatives on each dimension, and a distinction between categorical and coordinate spatial codes seems to provide the best explanation of the advantage. 相似文献
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We investigated the relationship between conformative peer bullying and issues of peer conformity among adolescents. This
relationship is examined through the establishment of a mediated moderation model for conformative peer bullying using structural
equation modeling in a sample of 391 second-year middle school students in Seoul, South Korea. We found that peer pressure
and resistance to peer influence interact with one another to affect antisocial conformity, which then affects conformative
peer bullying, thereby establishing its mediated moderation effect. The results suggest that conformative peer bullying that
encourages and assists active bullies is affected by antisocial conformity; moreover, an individual’s capacity to resist peer
influence plays a protective role against peer conformity, and this must be acknowledged as a significant influence in conformative
peer bullying among adolescents. 相似文献
16.
Cho YS Bae GY Proctor RW 《Journal of experimental psychology. Human perception and performance》2012,38(3):726-734
The present study tested whether coding of tone pitch relative to a referent contributes to the correspondence effect between the pitch height of an auditory stimulus and the location of a lateralized response. When left-right responses are mapped to high or low pitch tones, performance is better with the high-right/low-left mapping than with the opposite mapping, a phenomenon called the horizontal SMARC effect. However, when pitch height is task irrelevant, the horizontal SMARC effect occurs only for musicians. In Experiment 1, nonmusicians performed a pitch discrimination task, and the SMARC effect was evident regardless of whether a referent tone was presented. However, in Experiment 2, for a timbre-judgment task, nonmusicians showed a SMARC effect only when a referent tone was presented, whereas musicians showed a SMARC effect that did not interact with presence/absence of the referent. Dependence of the SMARC effect for nonmusicians on a reference tone was replicated in Experiment 3, in which judgments of the color of a visual stimulus were made in the presence of a concurrent high- or low-pitched pure tone. These results suggest that referential coding of pitch height is a key determinant for the horizontal SMARC effect when pitch height is irrelevant to the task. 相似文献
17.
The purpose of this study was to investigate whether the dual task paradigm would influence arm movements during walking. Furthermore, we examined the effects of different walking surfaces on arm movements while performing dual tasks. The effects of age and gender were also investigated. Fifteen young adults and 15 older adults were included in this study. Subjects were asked to perform the walking task alone (single-task trial) and walking in combination with a cognitive task (dual-task trial). Four walking conditions (1 single task and 3 dual task trials)×two walking surfaces were encountered. Both age groups had greater elbow and trunk movement in the sagittal plane under the dual task trials as compared to the single task trial (p<.05). Subjects had greater upper extremity and upper body movement on the soft floor than on the hard floor (p<.05). Subjects had greater movement amplitude when confronting a challenging environment, especially in the contralateral side. Among gender, there was a group-gender interaction: the older females had smaller upper extremity movement than the older males (p<.05) but the opposite was true for the young adults. The results suggest that different age groups of males and females use different balance control strategy to deal with the challenging conditions. 相似文献
18.
This study aims to examine relationships among various types of transitional retirement processes and life satisfaction. It conducted a cross-national comparison among Korea, Germany, and Switzerland using the Cross-National Equivalent File and the ordered logistic analysis method was used as the analysis model. We classify the retirement process by three types; the complete retirement type, the hopping type of post-retirement and the continuity type of post-retirement, and evaluate the life satisfaction in each type of retirement process. Our empirical analysis finds that workers of the complete retirement type have higher level of life satisfaction than workers working continually after retirement in South Korea, while workers continually working even after retirement periods have higher level of life satisfaction than workers of the complete retirement type in Germany and Switzerland. Based upon these empirical results, we also discuss the policy direction to improve the life satisfaction of the aged in South Korea. 相似文献
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