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A developmental investigation of eye movements during a serial spatial memory task
- Candice Coker Morey
- Silvana Mareva
- Jaroslaw Roman Lelonkiewicz
- Nicolas Chevalier
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Description: The emergence of strategic verbal rehearsal at around 7 years of age, which precedes a burst in memory capacity, is a milestone in descriptions of the development of short-term memory across childhood. This qualitative shift in mnemonic processes has been characterized as a shift from passive visual to more active verbal mnemonic strategy use, but no investigation of the development of overt spatial rehearsal has informed this explanation. We measured serial spatial order reconstruction in adults and groups of children 5-7 years old and 8-11 years old, while recording their eye movements. Children, particularly the youngest children, overtly fixated late-list spatial positions longer than adults, suggesting that younger children are less likely to engage in covert rehearsal during stimulus presentation than older children and adults. However, during retention the youngest children overtly fixated more of the to-be-remembered sequences than any other group, which is inconsistent with the idea that children do nothing to try to remember. Altogether, these data are inconsistent with the notion that children under 7 do not engage in any attempts to remember. They are most consistent with proposals that children's style of remembering shifts around age 7 from reactive cue-driven methods to proactive, covert methods, which may include cumulative rehearsal.