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41.
Children, 4-5 and 9-10 years old, and college-age adults were tested on two visual masking tasks. The first task required the Ss to identify whether a tachistoscopically presented bar was horizontal or vertical The second task, also using tachistoscopic presentation of stimuli, required Ss to locate a horizontal (or vertical) bar in a matrix of vertical (or horizontal) bars. In both tasks, backward masking produced greater disruption than did forward masking, and the amount of disruption induced by both backward and forward masking decreased as age increased. An Age by Masking Condition interaction was found only in the location task and reflected a much greater difference between backward- and forward-masking conditions for the youngest group than for the older groups. On the basis of these findings and other considerations, it was concluded that only in the location task, which presumably required visual search, was the speed of visual processing slower in the younger group. 相似文献
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In a booth designed especially for work with both autistic and electively mute children, a 4-yr-old girl named Dolly, who had no communicative speech or imitative skills, was given a preliminary session in which her verbal output was assessed. To elicit sounds from Dolly, an instrument called a “color organ” was used as a positive reinforcer. After this baseline assessment, in 40 half-hour sessions, Dolly was taught to make eye contact with E, and to obey instructions—although it was first necessary to extinguish her disruptive behavior, particularly her opérant crying. In addition, she learned non-verbal imitative behavior, such as hand clapping; and verbal imitative behavior, such as saying “Hi!” Social (play) sessions were begun after session 21, and continued for the remaining time. These were helpful in generalizing Dolly's learned skills to an environment other than the booth; and to other tasks, such as singing “Ee-eye-ee-eye-oh” in the refrain of the song, “Old McDonald”; and pointing to E's eyes, saying “ice”. 相似文献
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Phillip L. Emerson Doris C. Karnisky Carla J. Kastanis 《Behavior research methods》1990,22(2):256-259
Three inexpensive text-to-speech synthesizers are described, intelligibility data from a pilot experiment are reported, and software is offered that has been written to facilitate the phonemic programming of the Heathkit-Votrax synthesizer. 相似文献
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When men become “women”: Gender antagonism and the changing sexual geography of work in Newfoundland
Dona L. Davis 《Sex roles》1993,29(7-8):457-475
In the traditional Newfoundland maritime division of labor, men worked at sea on boats and women worked on the land in their households. Patterns of gender identity, work, and gender relations were characterized by an ethos of complementarity. Present declines in the fishery make it impossible to earn a living at sea and men have become landbound. The resulting infringement by unemployed men into the spaces and prerogatives traditionally allotted to women has come to generate a gender antagonism that permeates, if not dominates, contemporary gender relations in a southwest coast Newfoundland fishing community. Ethnographic analysis incorporates data collected during two periods of anthropological fieldwork: 1977–1978 and 1989–1990. Comparative assessment of economic, psychological, and cultural constructionist theories of gender relations inform the qualitative analysis of ethnographic data.The original period (1977–1978) of anthropological fieldwork was funded by a grant from the United States National Institute of Child and Maternal Health, which was administered through the Population Center at the University of North Carolina, Chapel Hill. The second period (1989–1990) of fieldwork was funded by grants from Memorial University of Newfoundland's Institute of Social and Economic Research, the Canadian Embassy's Canadian Studies Program, and the University of South Dakota's General Research Fund. 相似文献