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911.
Children from nursery school, kindergarten, and first grade were asked to select pictures which correctly represented the propositional content of six grammatical structures-active, passive, cleft-agent, cleft-patient, prepositional beneficiary, indirect object presented under three context conditions-appropriate, inappropriate, isolation. In the appropriate-context condition the relationship between the target structure and its prior context sentence followed known discourse regularities about the allocation of given and new information, while in the inappropriate-context condition the relationship between the target structure and prior context violated these discourse regularities. Comprehension of two of the grammatical structures tested—the passive and the cleft-patient—was better under the appropriate-context treatment than under the inappropriate-context treatment, indicating that young children are in fact sensitive to discourse regularities about the allocation of given and new information.The research reported herein was part of Gourley's Ph.D. dissertation for Cornell University, which was directed by Catlin. An earlier version of this article was presented by Gourley at the 1974 Summer Meeting of the Linguistic Society of America at Amherst, Massachusetts.Deceased. 相似文献
912.
The sensitivity of the tactile sense to shifts in the position of a point stimulus was determined at four body loci: the index finger, forehead, belly, and back. Water-jet stimulation was used, a method which allows frictionless travel of a point stimulus over the skin. Three subjects were tested by means of the method of forced choice, with the task being to say whether the stimulus moved to the right or to the left. The shift threshold was defined as that shift excursion which gave rise to 75% correct responding. The basic finding was that shift thresholds were on the order of 10 to 30 times smaller than the corresponding two-point limens obtained by Weinstein (1968) for the same body loci. These unexpectedly small shift thresholds indicate an exquisite sensitivity of the cutaneous sense to rapid changes in position of a point stimulus. A physiological model is presented which accounts for the difference between localization and spatial resolution. nt]mis|This research was supported by Department of Health~ Education, and Welfare Grant 14-P-SS282/9 from the Social and Rehabilitation Services, NIH Research Grant R01-EY-00686 from the National Eye Institute, and the Smith-Kettlewell Eye Research Foundation. 相似文献
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The present study evaluated the hypothesis that measures of linguistic skills differentially contribute to the variability in reading achievement at different ages. Linguistic skills that develop earlier and are more important for earlier phases of reading were predicted to contribute more to the variability of reading achievement at earlier ages (5–7) than at older ages (10–12). Conversely, linguistic skills that develop later and are more important for later phases of reading were predicted to contribute more to the variability in reading achievement at older ages (10–12) than at younger ages (5–7). To test these developmental hypotheses, measures of language skills with different developmental rates were administered to cross-sectional samples of disabled and nondisabled readers at three mean ages: 5.5, 8.5, and 11 years. Reading group differences were apparent at each age on measures assumed to develop earlier, thus failing to confirm the first prediction. However, these measures may not have been sensitive to linguistic skills important for beginning reading. Reading group differences on measures of later developing language skills were apparent only for older readers, thus confirming the second prediction. The latter age-dependent relationships provided additional evidence for developmental changes in the linguistic correlates of reading achievement. 相似文献
919.
Robert B. Welch Mel H. Widawski Janice Harrington David H. Warren 《Attention, perception & psychophysics》1979,25(2):126-132
The phenomena of prismatically induced “visual capture” and adaptation of the hand were compared. In Experiment 1, it was demonstrated that when the subject’s hand was transported for him by the experimenter (passive movement) immediately preceding the measure of visual capture, the magnitude of the immediate shift in felt limb position (visual capture) was enhanced relative to when the subject moved the hand himself (active movement). In Experiment 2, where the dependent measure was adaptation of the prism-exposed hand, the opposite effect was produced by the active/passive manipulation. It appears, then, that different processes operate to produce visual capture and adaptation. It was speculated that visual capture represents an immediate weighting of visual over proprioceptive input as a result of the greater precision of vision and/or the subject’s tendency to direct his attention more heavily to this modality. In contrast, prism adaptation is probably a recalibration of felt limb position in the direction of vision, induced by the presence of a registered discordance between visual and proprioceptive inputs. 相似文献
920.
Some examples are presented of the problems and concerns that were verbalized and discussed during group counseling sessions with 4 groups (36 students) of culturally deprived white ninth grade boys and girls. The examples cited indicate that among these culturally deprived students there is a general lack of identification with school, a pattern of employing inappropriate means to gain acceptance and recognition, a philosophy of life geared toward immediate material gratification, and parental models that do not result in positive parental identification. There seems to be little hope for these students in their present situation unless they receive some help and support from interested others outside their group. It is suggested that group counseling, for considerably more than the 15 sessions given these students, may afford a means by which the school and the counselor can help the culturally deprived find an effective way to deal with the dilemma in which they find themselves. 相似文献