a b s t r a c tThe aim of this study was to provide evidence for knowledge of the syntax governing the verbal form of large numbers in preschoolers long before they are able to count up to these numbers. We reasoned that if such knowledge exists, it should facilitate the maintenance in short-term memory of lists of lexical primitives that constitute a number (e.g., three hundred forty five) compared with lists containing the same primitives but in a scrambled order (e.g., five three forty hundred). The two types of lists were given to 5-year-olds in an immediate serial recall task. As we predicted, the lists in syntactic order were easier to recall, suggesting that they match some knowledge of the way lexical primitives must be ordered to express large numerosities.Ó 2009 Elsevier Inc. All rights reserved.
IntroductionThe acquisition of the number list has been described as a slow and laborious process, especially for children speaking languages such as English that, contrary to Chinese, do not map directly onto the Hindu-Arabic number system (Miller, Kelly, & Zhou, 2005). Although the rules used to generate large numbers (e.g., two hundred forty five) are more consistent and transparent than those governing the construction of the initial part of the list that must be learned by rote (i.e., from one to twenty), children need to acquire a complex set of syntactic rules combining a limited number of lexical primitives, rules leading to surprising peculiarities in some cases. For example, young French speakers need to understand that although cent neuf (one hundred and nine) and neuf cents (nine hundred) are two legal chains, cent dix (one hundred and ten) is legal but dix 0022-0965/$ -see front matter Ó