In summary,individuals with language and literacy disorders have difficulties with procedural learning in sequence-based tasks,but appear to be relatively unimpaired on declarative and non-sequential procedural learning measures.This may explain why their difficulties are more prominent in language tasks – which heavily load on to extracting and producing sequential information.However,no type of learning is purely declarative or procedural in nature,and the ways in which these distinctions apply to language learning in particular needs clarification.