文章基本信息

标题：An integration of competing accounts on children’s number line estimation
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作者：Dackermann, Tanja ; Huber, Stefan ; Bahnmueller, Julia 等
期刊名称：Frontiers in Psychology
电子版ISSN：1664-1078
出版年度：2015
卷号：6
页码：884-890
DOI：10.3389/fpsyg.2015.00884
出版社：Frontiers Media
摘要：Children’s estimation patterns in bounded number line estimation reveal marked developmental changes. Three different theoretical accounts were proposed to explain these changes: a log-to-linear shift account, a proportion-judgment account and a two-linear account considering familiarity with numbers or the understanding of the place-value structure of the Arabic number system. However, only the first two accounts are considered prominently in the ongoing scientific debate. Therefore, we first present a reanalysis of number line estimation data of Austrian first-graders contrasting all three accounts. Results indicate that the two-linear account is a reliable alternative to the log-to-linear shift as well as the proportion-judgment account. However, we do not claim the two-liner account to provide an exhaustive explanation for the observed developmental changes. We rather introduce the idea that aspects of all three accounts may complement - instead of exclude - each other. Jointly considering conceptual (i.e., familiarity, place-value) and procedural (i.e., proportion-judgments) aspects will allow for a more comprehensive understanding of children’s development in number line estimation.
关键词：mental number line; number line estimation; model fitting; numerical development; spatial representation of number magnitude