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1.
Anton K. Formann 《Psychometrika》1986,51(2):335-339
Jansen (1984) gave explicit formulas for the computation of the second-order derivatives of the elementary symmetric functions. But they are only applicable to those pairs of items which have unequal parameters. It is shown here that for equal parameters similar explicit formulas do exist, too, facilitating the application of the Newton-Raphson procedure to estimate the parameters in the Rasch model and related models according to the conditional maximum likelihood principle.The author wishes to thank the reviewers for their helpful comments on an earlier draft of this paper. 相似文献
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小学儿童奖赏公平性的认知发展 总被引:2,自引:0,他引:2
采用信息加工研究途径并假设故事情境探索小学儿童对奖赏公平性的社会认知发展,并将儿童的发展与成人作对比。研究结果表明,7,9岁儿童容易将"均等"与"公平"混淆,还没形成一个稳定的分配模式,而12岁儿童已能运用"努力"、"成果"、"能力"等规则较为稳定地作出公平奖赏决定或评价,但还没达到对更高层次的社会准则的理解和掌握。儿童这一发展制约于他们的信息加工能力以及获得有关社会价值观的社会化过程。 相似文献
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E. Beth Switzer Terrence E. Deal Jon S. Bailey 《Journal of applied behavior analysis》1977,10(2):267-272
Three classes of second graders served as subjects in this study of the effects of two types of intervention programs upon stealing: (1) an antistealing lecture with no specific contingency implied, and (2) a direct group contingency applied, whereby children were rewarded with (a) extra free time for no thefts, (b) allowed normal free time if stolen items were returned, and (c) punished with loss of free time if stolen items were not returned. A multiple-baseline design across the three classes showed the group contingency to be effective in reducing stealing behavior; the anti-stealing lecture was ineffective. 相似文献
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Joel Hundert 《Journal of applied behavior analysis》1976,9(1):107-107
Six elementary school children served as subjects in an experiment comparing the relative effectiveness of (1) token reinforcement, in which children received tokens for attending and for correct arithmetic performance; (2) response cost, in which children received “free” tokens at the start of a period but lost them for inattention and for arithmetic performance below a specified level; and (3) a combination of both token reinforcement and response cost. During training, the six subjects received all three procedures in counterbalanced sequence. The effects of the three procedures were assessed by a within-subject comparison divided into three phases: (i) baseline, (ii) training, (iii) withdrawal of tokens. Introduction of the three token procedures markedly increased the two dependent measures. However, there were no differences across the procedures in the amount of change produced in either attending behavior or arithmetic performance. During baseline, the subjects averaged 29% attending behavior and 6.4 correct problems. These levels increased to 85% for attending behavior and 11.4 correct problems for arithmetic performance during training. Removal of all token procedures significantly decreased attending behavior (to an average of 65%), but produced a nonsignificant reduction in arithmetic performance (to an average of 7.6 correct problems). There was evidence that this lack of differential effects of the three token procedures was not due to an inability to discriminate among them. Furthermore, the subjects were evenly divided in their preference for the three procedures. 相似文献
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运用《瑞文标准推理测验》和自编的《小学生心理素质问卷》对1247名小学生作心理素质团体测试。利用方差分析和聚类分析,探讨小学生心理素质与学业成绩的关系。结果表明:(1)总体上,学业成绩高分组心理素质优于学业成绩中等组和低分组,学业成绩中等组优于学业成绩低分组。(2)分年级看,不同年级不同学业成绩组的小学生在心理素质因素上的差异有不同。(3)学业成绩高分组学生主要分布在心理素质较好的水平层次,学业成绩中等组主要分布在心理素质中等水平层次上,而学业成绩低分组主要分布在心理素质不好的水平层次。 相似文献
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We investigated teacher versus student seat selection in the context of group and individual seating arrangements. Disruptive behavior during group seating occurred at twice the rate when students chose their seats than when the teacher chose. During individual seating, disruptive behavior occurred more than three times as often when the students chose their seats. The results are discussed in relation to choice and the matching law. 相似文献
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