E-book as facilitator of vocabulary acquisition: support of adults,dynamic dictionary and static dictionary

We investigated the effects of three facilitators: adults’ support, dynamic visual vocabulary support and static visual vocabulary support on vocabulary acquisition in the context of e-book reading. Participants were 144 Israeli Hebrew-speaking preschoolers (aged 4–6) from middle SES neighborhoods. The entire sample read the e-book without a dictionary once, and was pretested on receptive word comprehension, expressive word explanation and word production in story retelling. The sample was then randomly divided into four groups, each reading an e-book three times, with: (1) adults’ vocabulary support; (2) dynamic visual dictionary support; (3) static visual dictionary support; or (4) without support. The participants were then posttested on the same measures. Children’s progress in all measures was dependent on group, with adults’ support appearing as most effective, dynamic dictionary as second, static dictionary as third, and no support as least effective. However, the gains differed significantly only between some of the groups, but were always significantly different between the group given adults’ support and the control group which was given no support. We conclude that e-books can be used effectively to facilitate word meaning acquisition at different levels. This contribution can be augmented by adults’ support and dynamic dictionary support.     

When Sociocognitive Transaction among Peers Fails: The Case of Misconceptions in Science

The effect ofsociocognitive transaction among peers on cognitive change was analyzed. Transaction concerned the concept of speed applied to 2 problems: a Piagetian problem and a parallel problem evoking a misconception. The effect of transaction, intended to evoke inter- and intrapersonal conflicts, was compared to two other treatments: taking a multiple choice test aimed to raise intrapersonal conflict and no intervention. A total of 360 sixth, eighth, and tenth graders participated. Following treatments, subjects mainly progressed on the Piagetian problem and mainly regressed on the problem evoking the misconception. Transaction had a beneficial effect on the former problem, encouraging progress and discouraging regression relatively to other treatments. It had a bidirectional effect on the latter problem, encouraging both progress and regression. Cognitive change following transaction was related to level of reasoning on speed during transaction. Inter- and intrapersonal conflicts evoked by transaction resulted in different changes in the 2 problems: Interpersonal conflict increased intrapersonal conflict on both, but the degree of intrapersonal conflict was related to change on the latter problem only, with greater conflict evoking greater change, mainly regressive. Results cast doubt on Piagetian assumptions concerning the role of conflict in cognitive development.     

Crafting educational intervention research that's both credible and creditable

Pressley and Harris' concerns about the current quality of educational intervention research are applauded. They are also extended to distinguish between research credibility (scientific believability) and research creditability (educational commendability). A best possible design philosophy is introduced to enable intervention researchers to craft research that is both credible and creditable.     

The economics of student time

A major feature of almost all of the recent national calls for educational reform has been the recommendation to increase the amount of instructional time through lengthening the school day and school year, assignment of more homework, and expanding the proportion of the school day devoted to instruction. The purpose of this paper is to provide an analysis of the allocation of student time from the perspective of economic theory. Under a reasonable set of assumptions, the economic model that is employed predicts a rather small increase in educational achievement relative to rather substantial increases in instructional time. These predictions are found to comport well with the available empirical evidence. The policy consequences of the analysis are also examined.     

Can children effectively reuse the same mnemonic pegwords?

Seventy-three fifth-grade students were taught nine North American minerals and their corresponding hardness levels under either mnemonic (pegword/keyword) or free-study conditions. In the zero-repetition (standard) condition, each mineral was paired with a unique hardness level (1–9); in the one-repetition condition, three hardness levels were each represented by two different minerals (and three hardness levels by one mineral); and in the two-repetition condition, three hardness levels were each represented by three different minerals (and three hardness levels by one mineral); and in the two-repetition condition, three hardness levels were each represented by three different minerals. In all repetition conditions, mnemonic subjects significantly and substantially outperformed students who were given free study. Possibilities for adapting mnemonic techniques to overcome stimulus-produced interference are discussed.     

美国营利性高等教育的特征

过去,教育与营利似乎是一对相斥的概念教育属于公立机构,通过政府财政预算获得经费,而营利活动则属于企业行为。在新的经济和社会环境下,这种格局开始发生变化,一方面部分大学组织的性质发生了变化,营利性机构渐渐涉足过去公立机构的职能范围;另一方面公立大学不再完全依靠政府拨款,开始向学生收取学费,并且从事一些营利性的活动。《民办教育促进法》在制定过程中,也无法绕开教育与营利性这对矛盾。为了解决《教育法》对教育机构属性的规定与现实情况之间的矛盾,《民办教育促进法》对于教育机构的营利问题进行了模糊处理,“合理回报”就是妥协的结果。目前人们在“教育产业化”认识问题上依然存在着较大的分歧。在国外虽然没有“教育产业化”这样的提法,但遇到的问题却是相同或相似的,因此高等教育市场化、商品化、私有化等是学术界十分关心的问题。特别是营利性高等教育机构的出现和迅速发展,更引起人们的高度关注。为此,本刊特别组织了这次笔谈,邀请国内外研究者分别从各个角度发表自己的看法。