The study of language acquisition has a long and contentious history: researchers disagree on what drives this process, the relevant data, and the interesting questions. Here, I outline the Starting Big approach to language learning, which emphasizes the role of multiword units in language, and of coarse-to-fine processes in learning. I outline core predictions and supporting evidence. In short, the approach argues that multiword units are integral building blocks in language; that such units can facilitate mastery of semantically opaque relations between words; and that adults rely on them less than children, which can explain (some of) their difficulty in learning a second language. The Starting Big approach is a theory of how children learn language, how language is represented, and how to explain differences between first and second language learning. I discuss the learning and processing models at the heart of the approach and their cross-linguistic implications.

Usage-based (UB) accounts conceive of language learning as continuous, locally contingent construction learning, i.e., a lifelong process of developing and honing the repertoire of constructional patterns geared to the optimization of a language user’s communicative ability across a wide range of language domains. The continuous nature of the process entails that a full UB model needs to account for not only the dynamics of language learning at early stages of acquisition, but also the functionally motivated adaptations of the language system at more advanced levels of proficiency. We present a design based on naturalistic second language (L2) written productions that sets out to reconstruct the states of constructional knowledge of advanced L2 learners through the statistical analysis of their productions. Irrespective of theoretical framing, the study provides foundational data relevant for any property theory of language learning, i.e., any theory that is concerned with the nature of the language system to be acquired, which logically precedes a transition theory of the developmental processes of L2 acquisition.

This study explored whether native speakers of English and non-natives are sensitive to corpus-derived frequency of synonymous adjective-noun collocations (e.g., fatal mistake, awful mistake, and extreme mistake) and whether level of proficiency can influence this sensitivity. Both off-line (typicality rating task) and on-line (eye-movement) measures were employed. Off-line results showed that both natives and non-natives were sensitive to collocational frequency with clearer effects for non-natives as their proficiency increased. On-line, however, proficiency had no effect on sensitivity to frequency; both natives and non-natives showed early sensitivity to collocational frequency (first pass reading time). This on-line sensitivity disappeared later in processing for both groups (total reading time and fixation count). Results are discussed in light of usage-based theories of language acquisition and processing.