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991.
Arithmetic word problems are often presented accompanied by illustrations. The present study examined how different types of illustrations influence the speed and accuracy of performance of both good (n = 67) and poor arithmeticians (n = 63). Twenty-four arithmetic word problems were presented with four types of illustrations with increasing information value. The results show that illustrations can have a detrimental effect on performance on arithmetic word problems, produced by irrelevant, redundant or interacting sources of information. Principles from cognitive load theory are used to explain the results, in particular in relation to (poor) working memory ability. 相似文献
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J. C. S. Weeks 《Higher Education Quarterly》1981,35(2):234-240
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The evaluation of any antenatal prevention program of child abuse and neglect is limited for statistical and ethical reasons, as shown in the first part of the present study (cf., The obstetrical viewpoint by G. Soumenkoff). The authors propose a child psychiatry model of evaluation. Use of the model is illustrated by a 4-year survey of 374 selected high-risk pregnant women followed in the antenatal out-patient department of St. Pieters Hospital in Brussels. A child psychiatrist worked together with several gynecologists, supporting the high-risk couples as well as their children. Several indirect evaluation methods of the quality of screening and the efficiency of the work are analyzed. Long-term evaluation of the children is an absolute necessity. In order to evaluate this type of approach, a simple questionnaire concerning the quality of life of the children under study was derived from a model used in pediatric oncology by the EORTC and adapted to the problems of abused children. One part was answered by the parents which allowed the researchers to evaluate their perception of the child. The second part was filled out by the sociomedical professionals who followed the child. The combination of these two views is rich in information concerning the patient as well as the parents' attitude toward their child. 相似文献
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