Learning to map words onto their referents is difficult, because there are multiple possibilities for forming these mappings. Cross-situational learning studies have shown that word-object mappings can be learned across multiple situations, as can verbs when presented in a syntactic context. However, these previous studies have presented either nouns or verbs in ambiguous contexts and thus bypass much of the complexity of multiple grammatical categories in speech. We show that noun word learning in adults is robust when objects are moving, (...) and that verbs can also be learned from similar scenes without additional syntactic information. Furthermore, we show that both nouns and verbs can be acquired simultaneously, thus resolving category-level as well as individual word-level ambiguity. However, nouns were learned more quickly than verbs, and we discuss this in light of previous studies investigating the noun advantage in word learning. (shrink)

Here we examine the hypothesis that symbolic understanding across domains is mediated by a fundamental ‘symbolizing’ ability in young children. We tested 30 children aged 2–4 years on symbolic tasks assessing iconic and non-iconic word-referent and picture-referent understanding and administered standardised tests of symbolic play and receptive language. Children showed understanding of the symbol-referent relation earlier for pictures than written words, and performance within domains was correlated and, importantly, predicted by a marker of general symbolic ability. Performance on picture and (...) written word tasks was also unrelated to language comprehension. Thus, symbolic abilities in specific domains are underpinned by a general symbolizing ability which arises early in development. (shrink)