Two word-learning experiments were conducted to investigate the understanding of negative sentences in 18- and 24-month-old children. In Experiment 1, after learning that "bamoule" means "penguin" and "pirdaling" means "cartwheeling," 18-month-olds (n = 48) increased their looking times when listening to…

Languages differ in how they encode causal events, placing greater or lesser emphasis on the agent or patient of the action. Little is known about how these preferences emerge and the relative influence of cognitive biases and language-specific input at different stages in development. In these studies, we investigated the emergence of sentence…

An outline is provided of the contents and boundaries of three areas of competence, or systems of knowledge, that are to be minimally included in a theory of communicative competence: grammatical competence, sociolinguistic competence, and strategic competence. Grammatical competence is concerned with the rules of sentence grammar and sentence…