Affiliation:
1. 1Stanford University
2. 2Chung-Ang University, South Korea
3. 3University of Missouri, Columbia, MO
Abstract
Abstract
Children's gains in problem-solving skills during the elementary school years are characterized by shifts in the mix of problem-solving approaches, with inefficient procedural strategies being gradually replaced with direct retrieval of domain-relevant facts. We used a well-established procedure for strategy assessment during arithmetic problem solving to investigate the neural basis of this critical transition. We indexed behavioral strategy use by focusing on the retrieval frequency and examined changes in brain activity and connectivity associated with retrieval fluency during arithmetic problem solving in second- and third-grade (7- to 9-year-old) children. Children with higher retrieval fluency showed elevated signal in the right hippocampus, parahippocampal gyrus (PHG), lingual gyrus (LG), fusiform gyrus (FG), left ventrolateral PFC (VLPFC), bilateral dorsolateral PFC (DLPFC), and posterior angular gyrus. Critically, these effects were not confounded by individual differences in problem-solving speed or accuracy. Psychophysiological interaction analysis revealed significant effective connectivity of the right hippocampus with bilateral VLPFC and DLPFC during arithmetic problem solving. Dynamic causal modeling analysis revealed strong bidirectional interactions between the hippocampus and the left VLPFC and DLPFC. Furthermore, causal influences from the left VLPFC to the hippocampus served as the main top–down component, whereas causal influences from the hippocampus to the left DLPFC served as the main bottom–up component of this retrieval network. Our study highlights the contribution of hippocampal–prefrontal circuits to the early development of retrieval fluency in arithmetic problem solving and provides a novel framework for studying dynamic developmental processes that accompany children's development of problem-solving skills.
Reference90 articles.
1. Role of distinct parietal areas in arithmetic: An fMRI-guided TMS study.;Andres;Neuroimage,2011
2. Effects of development and enculturation on number representation in the brain.;Ansari;Nature Reviews Neuroscience,2008
3. The production and verification tasks in mental addition—An empirical comparison.;Ashcraft;Developmental Review,1984
4. The development of mental arithmetic: A chronometric approach.;Ashcraft;Developmental Review,1982
5. Cognitive arithmetic: Evidence for retrieval and decision processes in mental addition.;Ashcraft;Journal of Experimental Psychology: Human Learning & Memory,1978
Cited by
101 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献