Attout Lucie, Majerus Steve
Psychology and Neuroscience of Cognition Research Unit, University of Liege, Belgium.
Fund for Scientific Research FNRS, Belgium.
Br J Dev Psychol. 2018 Jun;36(2):285-298. doi: 10.1111/bjdp.12211. Epub 2017 Sep 12.
Recent studies have demonstrated that both ordinal number processing and serial order working memory (WM) abilities predict calculation achievement. This raises the question of shared ordinal processes operating in both numerical and WM domains. We explored this question by assessing the interrelations between numerical ordinal, serial order WM, and arithmetic abilities in 102 7- to 9-year-old children. We replicated previous studies showing that ordinal numerical judgement and serial order WM predict arithmetic abilities. Furthermore, we showed that ordinal numerical judgement abilities predict arithmetic abilities after controlling for serial order WM abilities while the relationship between serial order WM and arithmetic abilities was mediated by numerical ordinal judgement performance. We discuss these results in the light of recent theoretical frameworks considering that numerical ordinal codes support the coding of order information in verbal WM. Statement of contribution What is already known on this subject? Numerical ordinal processes predict mathematical achievement in adults. Order WM processing predicts first mathematical abilities. What the present study adds? Numerical ordinal processes predict mathematical achievement in children and independently of order WM. The link between order WM and mathematical abilities was mediated by long-term ordinal processes.
近期研究表明，序数处理能力和序列顺序工作记忆（WM）能力均能预测计算成绩。这就引出了一个问题：在数字和WM领域中是否存在共同的序数处理过程。我们通过评估102名7至9岁儿童的数字序数、序列顺序WM和算术能力之间的相互关系来探究这个问题。我们重复了之前的研究，结果表明序数数字判断和序列顺序WM能预测算术能力。此外，我们还发现，在控制了序列顺序WM能力之后，序数数字判断能力仍能预测算术能力，而序列顺序WM与算术能力之间的关系是由数字序数判断表现介导的。我们根据最近的理论框架讨论了这些结果，该理论框架认为数字序数编码支持言语WM中顺序信息的编码。贡献声明关于这个主题已知的信息有哪些？数字序数处理过程能预测成年人的数学成绩。顺序WM处理能预测最初的数学能力。本研究增加了什么内容？数字序数处理过程能预测儿童的数学成绩，且独立于顺序WM。顺序WM与数学能力之间的联系是由长期序数处理过程介导的。
