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11.
DBA/2J mice were monaurally or binaurally tested for susceptibility to sound-induced seizure. Two seconds following the beginning of running, one group of binaurally tested mice had acoustic stimulation interrupted for 15 s. These mice later seized when the stimulation was readministered. Their seizure progression closely resembled the behavior exhibited by noninterrupted binaurally stimulated mice and did not shift to the biphasic motor pattern of monaurally stimulated subjects. We conclude that the single burst of running of a binaurally tested mouse is qualitatively different from either of the two bursts of running exhibited by monaurally tested mice. 相似文献
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Greg Valcante Wynelle Roberson William R. Reid William D. Wolking 《Journal of applied behavior analysis》1989,22(1):43-55
We investigated the influence of teacher wait-time and intertrial interval durations on the performance of 4 multiply handicapped students during instruction in 10 skills. Four experimental conditions were evaluated: long wait-time and long intertrial interval, long wait-time and short intertrial interval, short wait-time and long intertrial interval, and short wait-time and short intertrial interval. Instructors attempted to keep short intervals as close as possible to 1 s and long intervals as close as possible to 10 s for both variables. Results showed that student performance was superior under the long wait-time conditions irrespective of the length of the intertrial interval. 相似文献
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In two experiments, subjects read passages of text and circled instances of a target letter under normal conditions or while engaged in articulatory suppression. In Experiment 1, subjects searching for the letter e made a disproportionately large number of errors on the word “the” and more errors when e occurred in unstressed than in stressed syllables of three-syllable words. In Experiment 2, subjects searching for the letter f made an exceedingly large number of errors on the word “of.” Articulatory suppression significantly reduced the stress effect in the three-syllable words but did not reduce the tendency to make errors on “the” or “of,” suggesting that phonological recoding is responsible for this effect of stress but does not influence the unitization processes of reading. 相似文献
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Two hundred and sixty three young adult college students responded to openended questions assessing their specific intentions, motives, and plans for having children. The most commonly stated motives for childbearing reflected a strong interest in establishing an identity and social network. Financial, marital, and emotional stability were identified as important factors influencing the timing of parenthood. Several significant sex differences were found for both motives and the timing of parenthood. These findings are discussed in terms of changing social norms regarding parenthood and changing sex role expectations.Portions of this research were presented at the Eastern Regional Psychological Association Convention in New York, April 1986. This research was funded by a grant from Trenton State College, Committee for Faculty and Institutional Research and Sabbatical Leave. 相似文献
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Helen E. Ullrich 《Sex roles》1987,16(11-12):615-635
Data on 94 women gathered during four field trips to a village located in the Malnad area of Karnataka form the basis of this examination of changes in Havik Brahmin marriage patterns over a 20-year period. Four case studies of marriages and two case studies of single women illustrate social change, particularly the influence of increased education, marriage age, and marriage choice. These case studies illustrate that, with an increase in marriage age and an increase in educational level, women have increased independence as daughters, brides, wives, and mothers. Concurrent with this is a decreased emphasis on ritual. Women have become assertive as they have perceived options. The socialization of women into learned helplessness and absolute dependence on men is in the past. Where women were perceived and perceived themselves as forever childlike, they now have grown to maturity. Men have to acknowledge women's educational achievements, especially when sisters achieve more than their brothers. With the recognition of feminine achievement has come increased independence for women. Mothers who have been bitter about their own limitations have encouraged daughters to achieve. With a change from an ascribed status of men as superior to achieved status based on merit has come increased opportunities for women. 相似文献
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Helen Goodluck 《Journal of psycholinguistic research》1986,15(2):177-188
A test of prepositional phrase structure in 4- to 6-year-old children's language is reported. Children's productions of PP and verb-particle sequences were elicited. Children produced pronominal and full NP objects of sequences corresponding to PPs and verb-plus-particle in the adult grammar. Prepositions freely took both pronominal and full NP objects (He's jumping over it. He's jumping over the table). In particle verb constructions, pronominal objects were placed immediately after the verb in all but a few cases (He's pushing it overnot He's pushing over it). With full NP objects, the preference was to place the verb after the particle (He's pushing over the table). These facts support an analysis in which if the child constructs a PP-over-P—NP structure for prepositional phrases but not for verb-particle sequences, and follows adultlike rules for these structures.This research was supported in its initial stages by NIH grant No. HD90647-03 to T. Roeper and S.J. Keyser and was completed while the author was supported in part by grants from the Graduate School Research Committee of the University of Wisconsin-Madison and from the Spencer Foundation through the University of Wisconsin School of Education. 相似文献
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