The MacArthur-Bates Communicative Development Inventories (CDIs) are a widely used
family of parent-report instruments for easy and inexpensive data-gathering about early …

Abstract The Child Language Data Exchange System (CHILDES) has played a critical role
in research on child language development, particularly in characterizing the early language …

This article presents a developmental pathway for the acquisition of morphosyntactic
variation. Although there is abundant evidence that morphosyntactic variation is pervasive …

How we vary our speech is fundamental in signalling who we are, where we're from and
where we're going. How and when does such variation arise? Here, leading experts …

Here we overview our recent research investigating children and adults' learning of rules
and variation. In all these studies, our findings are that children and adults differ in how they …

This dissertation develops a cognitive model describing when children learn to group
distinct sound segments (allophones) into abstract equivalence classes (phonemes). The …

Hyper-articulation of vowel and consonant contrasts is often reported in infant-directed
speech (IDS), but is not universal cross-linguistically, and may be a side-effect of speaking …

This study investigates cross-linguistic transfer in the production of long mid front vowels
[øː] and [œː] by simultaneous bilingual Finnish and Finland-Swedish speakers in Finland …

Learning sound categories is central to language acquisition–but we know little about the
extent of phonetic variability in the learner's input. In this study, we phonetically annotated …

The discovery of phonemes and allophonic relations, as surface alternations accumulate in
children's growing vocabulary, is a vital element of language acquisition. This paper …