“…When presented with semantically related items (lexical sets, e.g., 'glass', 'cup', 'saucer'), although it has been first reported that children aged 9 to 10 years show some evidence of clustering, organizing their responses by recalling items in semantic or adjacent groups (Hasselhorn, 1990) , more recent studies showed that this ability progressively develops from 7 to 13 years-old (e.g., Bjorklund & de Marchena, 1984;Bjorklund & Jacobs, 1985;Schleepen & Jonkman, 2012;Schwenck et al, 2007; for a review see Ornstein et al, 2010) . Indeed, a recent cognitive modelling study has shown that memory for individual items is the only factor contributing to enhance memory performance in 7-year-old children whereas encoding items as clusters increasingly predicts better performance for children older than 10 years-old (Horn et al, 2021).…”