Under- and Over-Estimation A Bi-Directional Mapping Process Between Symbolic and Non-Symbolic Representations of Number?
Under- and Over-Estimation A Bi-Directional Mapping Process Between Symbolic and Non-Symbolic Representations of Number?
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DOI：
10.1027/1618-3169/a000064
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发表时间：
2011-01-01
影响因子：
1.3
通讯作者：
Seron, Xavier
中科院分区：
文献类型：
--
作者：
Crollen, Virginie;Castronovo, Julie;Seron, Xavier
在过去的30年里，数值估计得到了大量的研究。最近，Castronovo和Seron（2007）提出了双向映射假设，以解释以下发现：依赖于估计任务的类型（感知与数字的产生），发现了相反的表现模式（即，分别低估和高估）。在此，我们通过三种类型的数字估计任务进一步研究了这一假设：（1）知觉任务，其中被试必须估计一个非符号集合的数量;（2）产生任务，其中被试必须近似地产生一个符号数字输入的数量;（3）再现任务，参与者必须再现非符号数字输入的数量。我们的研究结果进一步支持了以下发现：根据估计任务的类型，发现了不同的模式：（1）在知觉任务中的低估;（2）在生产任务中的高估;（3）在再现任务中的准确估计。此外，相关分析显示，越是被试在知觉任务中低估，他/她在生产任务中高估。我们讨论了这些经验数据，展示了它们如何被双向映射假设所解释（Castronovo & Seron，2007）。
Over the last 30 years, numerical estimation has been largely studied. Recently, Castronovo and Seron (2007) proposed the bidirectional mapping hypothesis in order to account for the finding that dependent on the type of estimation task (perception vs. production of numerosities), reverse patterns of performance are found (i.e., under-and over-estimation, respectively). Here, we further investigated this hypothesis by submitting adult participants to three types of numerical estimation task: (1) a perception task, in which participants had to estimate the numerosity of a non-symbolic collection; (2) a production task, in which participants had to approximately produce the numerosity of a symbolic numerical input; and (3) a reproduction task, in which participants had to reproduce the numerosity of a non-symbolic numerical input. Our results gave further support to the finding that different patterns of performance are found according to the type of estimation task: (1) underestimation in the perception task; (2) over-estimation in the production task; and (3) accurate estimation in the reproduction task. Moreover, correlation analyses revealed that the more a participant under-estimated in the perception task, the more he/she over-estimated in the production task. We discussed these empirical data by showing how they can be accounted by the bi-directional mapping hypothesis (Castronovo & Seron, 2007).