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A PA probe experiment was conducted to determine whether a mechanism other than selective search is involved in the Only effect of directed forgetting. To accomplish this, a small number of trials which tested all pairs in the list successively (“all” trials) were intermixed with the standard single-probe trials. On “single” trials, both pretest mechanisms and selective search may operate, but on “all” trials, selective search was eliminated. The analysis compared the Only effect and intrusion data under these two conditions and examined the fate of to-be-forgotten (TBF) recall on “all” trials. The evidence confirmed the major role of selective search in producing the Only effect. It was concluded that if a pretest mechanism was operative, it did not have the properties of a voluntary forgetting mechanism and it had only a small effect on the first half of the list. 相似文献
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Yakov M. Epstein Peter Suedfeld Daniel M. Bresnahan 《Journal of applied social psychology》1971,1(1):57-65
Students' reactions to the occupation of a university building were surveyed on the first and last day of the occupation as well as several weeks following the end of the occupation. Respondents were either day or evening school students at two different campuses of the same university. Results of the survey indicate that: (1) The majority of students, both day and evening, believe that the university should negotiate with the occupiers. The only exception to this trend is a group of political conservatives who advocate punishment. (2) The conflict tends to polarize attitudes about radicals, but mostly against them rather than in their favor. (3) A striking net increase is found in attitudes favorable to conventional political groups. (4) The closer the physical proximity of the respondent to the scene of the conflict, the more negative are his attitudes toward those who are seen as responsible for the disruption. (5) Evening school students are more negative toward the occupiers than are day school students. (6) The attitudes of young evening students are more similar to those of their older classmates than to those of their day school agemates. 相似文献
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Subjects estimated the size and distance of a single electroluminescent disc in the absence of distance cues and without the use of visual comparators. For different groups of Ss the disc subtended a visual angle of 1, 2, 4, or 8 deg. The size estimates varied directly with visual angle and the distance estimates varied inversely with visual angle. These results were considered in relation to the question of whether or not retinal size hasa direct correlate in perceived size. 相似文献
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R Epstein 《Journal of the experimental analysis of behavior》1985,44(1):121-125
Studies of pigeon behavior in which magazine-cycle duration is varied suggest that many researchers assume that feeders of different designs dispense food at roughly the same rate. However, Epstein (1981) showed that, with a commonly used feeder, the amount of grain a pigeon consumes is a negatively accelerated function of magazine-cycle duration. The present experiment shows that, with a different commonly used feeder, amount consumed is roughly a linear function of magazine-cycle duration. At a duration of 60 seconds, the second feeder dispenses roughly 10 times as much food as the first. Thus, reports of studies in which magazine-cycle duration is varied should identify the design of the feeder employed, and in some cases, authors should consider determining the feeding functions for those feeders. 相似文献
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