The aim of this project is to examine children’s interpretation (off-line comprehension), processing (on-line comprehension) and production of negation when negative sentences are embedded in an appropriate discourse context. Two scenarios are possible. On the one hand, a previous (appropriate) discourse may help children to comprehend and produce negation. If so, the difference in acquisition timing between affirmative and negative sentences should disappear once discourse is taken into account. On the other hand, children may have limited cognitive resources to enable integration of discourse information in comprehension, interpretation, and production. In this case, the difference in acquisition timing between affirmative and negative sentences should be attested under appropriate context conditions.