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961.
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963.
The roles of person familiarity and parental involvement in 3.5-month-old infants' sensitivity to the dynamic emotion expressions of others were explored. In the home, parental facial/vocal expressions (happy, sad, angry) were videotaped, and measures of parent-infant involvement were obtained. In the laboratory, 32 infants alternately viewed their mother and father and an unfamiliar woman and man portraying expressions in an intermodal preference task. Infants looked differentially at mothers' expressions but not at those of fathers or unfamiliar adults. Examination of parent-child involvement patterns revealed significant relations with infants' sensitivity to expressions. Results suggest that person familiarity may facilitate infants' developing understanding of others' emotion expressions, and that individual differences in family dynamics may be relevant to infants' patterns of responding. 相似文献
964.
Rejection, deprivation, physical pain, and an unpredictable environment are the primary determinants in the maladjustment of the abused child from infancy through adolescence.It is our conclusion that the majority of adolescents with character and personality disorders, particularly as manifested in the BORDERLINE SYNDROME, will have been subjected repeatedly and consistently to a parenting style incorporating these four determinants.The authors are involved in providing long term In-patient treatment to 40 severely emotionally disturbed adolescents. The vast majority of these youngsters are referred for uncontrollable acting out. Approximately ninety percent of these adolescents under treatment were abused and neglected as children.One of the forty adolescents under treatment will be considered. We believe her case history is typical of the abused child in adolescence. 相似文献
965.
Concepción?Paredes-OlayEmail author María?J.?F.?Abad Matías?Gámez Juan?M.?RosasEmail author 《Learning & behavior》2002,30(3):239-248
Four experiments were conducted to explore outcome-specific transfer from causal predictive judgments to instrumental responding. A video game was designed in which participants had to defend Andalusia from navy and air force attacks. First, they learned the relationship between two instrumental responses (two keys on a standard keyboard) and two different outcomes (destruction of the ships or destruction of the planes). Then they learned to predict which of two different stimuli predicted which outcome. Finally, they had the opportunity of making either of the two instrumental responses in the presence of either stimulus. Transfer was shown as a preference for the response that shared an outcome with the current stimulus. The presentation of the stimulus during the test produced a decrease in the overall rate of response. Responding to a neutral stimulus in Experiments 2 and 3 suggested that this overall decrease in responding was due to a combination of the time needed to process the meaning of the stimulus and the activation of the representation of the outcome in the presence of the stimulus during the test. Transfer between predictive judgments and instrumental responding mirrors the outcome-specific Pavlovian instrumental transfer observed in conditioning studies with rats. 相似文献
966.
The role of analogies in promoting conceptual change in biology 总被引:1,自引:0,他引:1
Four analogies which were used to teach biology topics by four different teachers were analysed from different theoretical perspectives to determine the key role they had to play in the process of conceptual change. A supermarket analogy for the classification of living things was described using the Posner et al. (1982) view of conceptual change as having the role of a sense maker. A car cooling system analogy for human temperature homeostasis was found to play the role of a memory aid and was best explained by considering Vosniadou's (1994) framework theory and mental models perspective of conceptual change. A fluid mosaic analogy for cell membranes was used by the teacher as a transformer and was best explained by Chi et al.'s (1994) ontological category perspective of conceptual change. Finally, a bucket and pump analogy used to teach the stucture and function of the heart was described as a motivator and was viewed through the motivational perspective of conceptual change of Pintrich et al. (1993). The paper concludes that learning in different situations can best be explained by different perspectives of conceptual change and that these perspectives have much to tell us about the normal shifts in conceptual understanding as well as radical conceptual change. 相似文献
967.
Bruce F. Pennington 《Annals of dyslexia》1989,39(1):81-93
This paper reviews what is currently known about the genetics of dyslexia and shows how genetic studies can help clarify which
symptoms are primary and which are secondary in dyslexia. On the genetic side, current evidence supports the view that dyslexia
is familial, substantially heritable, and heterogeneous in its genetic mechanisms. At least some forms of familial dyslexia
appear to be autosomal dominant, with linkage studies supporting both a major locus on chromosome 15 and genetic heterogeneity.
On the symptom side, current evidence supports the view that the primary symptom in dyslexia is a deficit in the phonological
coding of written language. This primary symptom likewise appears to be heritable. Recent evidence suggests that the heritable
precursor to this written language deficit is a spoken language deficit in the skill of phoneme segmentation and awareness. 相似文献
968.
Do Costs Differ Between For-Profit and Not-for-Profit Producers of Higher Education? 总被引:1,自引:0,他引:1
In theory, not-for-profit organizations will be characterized by higher production costs per unit of output than for-profit producers of otherwise-identical goods/services, since profit maximization implies cost minimization per unit of output; breaking even does not imply cost minimization and, indeed, may imply inflated costs. We explore the empirical validity of this hypothesis in the context of higher education. Using 1996 data, we estimate multiproduct cost functions for 1,450 public, 1,316 private, not-for-profit, and 176 private, for-profit institutions of higher education in the United States. We fail to find a statistically significant difference between for-profit and not-for-profit private providers, but do find a statistically significant difference between private, not-for-profit institutions and public institutions. 相似文献
969.
970.
Using Exploratory Talk to Enhance Problem-solving and Reasoning Skills in Grade-7 Science Classrooms
This study investigates whether the generation of exploratory talk in grade seven, second-language science classrooms in the Eastern Cape Province, South Africa, has a positive effect on learners in terms of their problem-solving and reasoning skills and whether socio-cultural milieus (urban, peri-urban and rural settings of schools) have an effect on any cognitive gains that may be made by learners. The findings were that there is a clear and statistically significant improvement in the mean test scores on problem-solving and reasoning of pupils who participated in the classroom discussion initiative (exploratory talk) over those of the comparison groups. This result was consistent in both the first- and second-studies that were undertaken. There was also a significant difference between the gains in problem-solving and reasoning test scores of the three socio-geographical settings in which the participating schools are found. 相似文献