Acquiring perfectivity and telicity in Dutch, Italian and Polish

This paper presents a crosslinguistic study into the acquisition of form-to-meaning correspondences in the domain of aspect. How may form affect the acquisition process and how may meaning do so? The results from aspectual comprehension experiments with Dutch, Italian and Polish L1 learners reveal that both form and meaning properties affect the acquisition path and lead to developmentally different patterns across languages. The semantics of perfective aspect is acquired earlier than imperfective aspect. Moreover, there is a surprising discrepancy in the understanding of perfective aspect. Whereas Dutch and Polish children have acquired the completion entailment of their Present Perfect and perfective aspect respectively by the age of 3, Italian 3-year-olds perform at chance with their Present Perfect. These results do not support the hypothesis of Uniformity of Aspect Acquisition, which claims that certain aspectual notions (in particular, perfective aspect) are acquired around the same age independent of the language-specific encoding. Instead I put forward an acquisition theory of form-to-meaning correspondences that is sensitive both to form – Morphological Salience, namely, the idea that the semantics of morphologically salient paradigms is acquired early – and to meaning – Semantic Complexity, namely, the idea that the semantics of simple aspectual operations is acquired early.