University of Tübingen, Tübingen, Germany.
University of Tübingen, Tübingen, Germany; Centre for Mathematical Cognition, School of Science, Loughborough University, United Kingdom.
Trends Neurosci Educ. 2023 Jun;31:100202. doi: 10.1016/j.tine.2023.100202. Epub 2023 Apr 16.
What, exactly, do number line estimation (NLE) tasks measure? Different versions of the task were observed to have different effects on performance.
We investigated associations between the production (indicating the location) and perception version (indicating the number) of the bounded and unbounded NLE task and their relationship to arithmetic.
A stronger correlation was observed between the production and perception version of the unbounded than the bounded NLE task, indicating that both versions of the unbounded-but not the bounded-NLE task measure the same construct. Moreover, overall low but significant associations between NLE performance and arithmetic were only observed for the production version of the bounded NLE task.
These results substantiate that the production version of bounded NLE seems to rely on proportion judgment strategies, whereas both unbounded versions and the perception version of the bounded NLE task may rely more on magnitude estimation.
数字线估计（NLE）任务究竟测量什么？观察到不同版本的任务对表现有不同的影响。
我们研究了有界和无界 NLE 任务的产生（表示位置）和感知版本（表示数字）之间的关联，以及它们与算术的关系。
无界 NLE 任务的产生和感知版本之间的相关性更强，表明这两个版本的无界-NLE 任务都测量相同的结构。此外，仅在有界 NLE 任务的产生版本中观察到 NLE 表现和算术之间的整体相关性较低但显著。
这些结果证实，有界 NLE 的产生版本似乎依赖于比例判断策略，而无界版本和有界 NLE 任务的感知版本可能更多地依赖于大小估计。
