Published online by Cambridge University Press: 29 November 2011
There are three hallmarks of core linguistic properties. First, they are expected to be manifested in typologically different languages. Second, they should unify superficially unrelated linguistic phenomena. Third, they are expected to emerge early in the course of language development, all things being equal (Crain, 1991). The present study investigates a candidate for a core linguistic property, namely the semantic property of downward entailment. We report the findings of two experimental studies of children's knowledge of downward entailment. These experiments explore two different aspects of downward entailment, in a study with Mandarin-speaking children. Taken together with previous research findings, the results of the present study support the conclusion that downward entailment is a core property of human languages.
This research was supported by the Australian Research Council Grant DP0879842 to Stephen Crain and Rosalind Thornton. It was also partially supported by the Chinese National Science Grant 30770767 to Linyan Su and the Chinese National Social Science Grant 09BYY022 to Liqun Gao. We thank Nobu Akagi, Anna Notley, Francesco Ursini and especially Thomas Lee and Rosalind Thornton for valuable suggestions; we thank the anonymous reviewers for their insightful comments. We would also like to thank those children and adults who participated in the experiments for their support and cooperation in the research.