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M Van Selst E Ruthruff J C Johnston 《Journal of experimental psychology. Human perception and performance》1999,25(5):1268-1283
Can people learn to perform two tasks at the same time without interference? To answer this question, the authors trained 6 participants for 36 sessions in a Psychological Refractory Period (PRP) experiment, where Task 1 required a speeded vocal response to an auditory stimulus and Task 2 required a speeded manual response to a visual stimulus. The large PRP effect found initially (353 ms in Session 1) shrank to only about 40 ms over the course of practice, disappearing entirely for 1 of the 6 participants. This reduction in the PRP effect with practice is considerably larger than has been previously reported. The obtained pattern of factor interactions between stimulus onset asynchrony and each of three task difficulty manipulations (Task 1 judgment difficulty, Task 2 stimulus contrast, and Task 2 mapping compatibility) supports a postponement (bottleneck) account of dual-task interference, both before and after practice. 相似文献
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Randy D. Fisher Donna Derison Chester F. Polley Jennifer Cadman Dana Johnston 《Journal of applied social psychology》1994,24(7):614-630
Two studies are reported that examine the relationships among religiousness, religious orientation, and prejudice toward gays and lesbians. Study 1 reports the results of a survey done for the purposes of scientific jury selection. These results suggest that Baptists, fundamentalists, and “Christians” display more antigay prejudice than do Catholics, Jews, and many Protestant denominations, but even many supporters of gay-tolerant religions show more antigay prejudice than those claiming no religious preference. Among those with a religious preference, frequency of worship is significantly related to antigay prejudice among those belonging to antigay denominations, but not among those belonging to more gay tolerant religious faiths. Study 2 reports the results of a study of college students regarding religiousness, religious orientation, and prejudice toward gays and lesbians. Results showed that self reported religiousness, frequency of worship, and Batson's internal and external scales were all positively correlated with measures of prejudice toward gays and lesbians, whereas scores on the Quest (Interactional) scale were negatively correlated. Results of both studies strongly challenge the view that those with an intrinsic religious orientation are unprejudiced. It is argued that a social influence process can account for the role played by religious practice and beliefs in creating and maintaining negative attitudes toward gays and lesbians. 相似文献
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S Yantis J C Johnston 《Journal of experimental psychology. Human perception and performance》1990,16(1):135-149
Early and late selection models of attention disagree about whether visual objects are identified before or after selection, with recent evidence of interference from to-be-ignored stimuli favoring late selection over early selection accounts. However, these tests may not have permitted optimal attentional focusing. In 4 experiments subjects identified an attentionally cued target letter embedded among distractors. Only minimal effects of information appearing in to-be-ignored locations were observed. This striking efficiency of selection provides support for early selection theories and calls into question some late selection theories holding that stimuli throughout the display are immediately and fully identified prior to attentional selection. In order to explain the larger pattern of results across a variety of focused- and divided-attention paradigms, a hybrid model is advanced with a flexible locus for visual selection. 相似文献
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W A Johnston K J Hawley S H Plewe J M Elliott M J DeWitt 《Journal of experimental psychology. General》1990,119(4):397-411
In several experiments, observers were given glimpses of 4-word arrays. Accuracy of word localization was tested after each array. Some words, called familiar, appeared many times across the series of arrays; others, called novel, appeared only once. The ratio of novel to familiar words in an array ranged from 0:4 to 4:0. When familiar and novel words were not intermixed (in 0:4 and 4:0 arrays), localization accuracy was higher for familiar words. However, when they were intermixed, especially in 1:3 arrays, accuracy tended to be higher for the novel words. This novel popout effect was the outcome of the suppressed localizability of the familiar words (relative to the 0:4 baseline) and the enhanced localizability of the novel words (relative to the 4:0 baseline). Novel popout may reflect an automatic orientation of attention away from more fluently unfolding regions of the perceptual field (familiar objects) and toward less fluently unfolding regions (novel objects). 相似文献
467.
Work status and mothering are culturally constructed as rigid binaries. The purpose of this study was to explore the effect on mothers of these polarized characterizations of motherhood and to assess the social support mothers perceive they receive for their mother identity. This study, based on interview data collected from 98 married mothers of preschool children, demonstrated that Mother War rhetoric is most extensively internalized by at-home mothers. The majority of mothers perceived a lack of cultural support for their mother role, though the impact of cultural Mother War rhetoric was buffered or exacerbated by mothers' social support systems. The lack of adequate support from other mothers, spouses, parents, and in-laws led mothers to binary constructions of worker–mother identity. This, in turn, led mothers to seek support within shared contexts, which further separated at-home and employed mother from each other and separated mothers from the support of their parents. 相似文献
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