While voicing contrasts in word-onset position are acquired relatively early, much less is known about how and when they are acquired in word-coda position, where accurate production of these contrasts is also critical for distinguishing words (e.g., dog vs. dock). This study examined how the acoustic cues to coda voicing contrasts are realized in…

Learning to use word versus phrase level prosody to identify compounds from lists is thought to be a protracted process, only acquired by 11 years (Vogel & Raimy, 2002). However, a recent study has shown that 5-year-olds can use prosodic cues other than stress for these two structures in production, at least for early-acquired noun-noun…

Weak syllables in Germanic and Romance languages have been reported to be challenging for young children, with syllable omission and/or incomplete reduction persisting till age five. In Mandarin Chinese, neutral tone (T0) involves a weak syllable with varied pitch realizations across (preceding) tonal contexts and short duration. The present study…

English-speaking children use plural morphology from around the age of 2, yet often omit the syllabic plural allomorph /-[schwa]z/ until age 5 (e.g., "bus(es)"). It is not clear if this protracted acquisition is due to articulatory difficulties, low input frequency, or fricative-final words (e.g., "bus," "nose") being…

Phonological processes result in surface variants of the same words across phonological contexts, posing potential word learning challenges for children. Mandarin tone sandhi is a tonal process changing Tone 3 (T3) in different tonal and syntactic contexts, resulting in allophonic variants of T3 in connected speech. Previous studies found that…

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 rate. This study investigated the voicing characteristics of the four-way oral stop voicing contrast in Nepali IDS. Both lead and lag time of word-onset/g,…

A growing body of research with typically developing children has begun to show that the acquisition of grammatical morphemes interacts not only with a developing knowledge of syntax, but also with developing abilities at the interface with prosodic phonology. In particular, a Prosodic Licensing approach to these issues provides a framework for…

Purpose: The aim of this article was to explore how the type of allomorph (e.g., past tense buzz[ d ] vs. nod[ ?d ]) influences the ability to perceive and produce grammatical morphemes in children with typical development and with specific language impairment (SLI). Method: The participants were monolingual Australian English--speaking children.…

Children are known to use different types of referential gestures (e.g., deictic, iconic) from a very young age. In contrast, their use of non-referential gestures is not well established. This study investigated the use of "stroke-defined non-referential" 'beat' gestures in a story-retelling and an exposition task by twelve 6-year-olds,…

Young children's first attempts at CVC words are often realized with the final consonant being heavily aspirated or followed by an epenthetic vowel (e.g. "cat"/kaet/ realized as [kaet[superscript h]] or [kaet[superscript ?]]). This has led some to propose that young children represent word-final (coda) consonants as an onset-nucleus…

Many English-speaking children use plural nominal forms in spontaneous speech before the age of two, and display some understanding of plural inflection in production tasks. However, results from an intermodal preferential study suggested a lack of "comprehension" of nominal plural morphology at 24 months of age (Kouider, Halberda, Wood,…

Background: Five-year-olds with specific language impairment (SLI) often struggle with mastering grammatical morphemes. It has been proposed that verbal morphology is particularly problematic in this respect. Previous research has also shown that in young typically developing children grammatical markers appear later in more phonologically…

Purpose: Evidence from children's spontaneous speech suggests that utterance length and utterance position may help explain why children omit grammatical morphemes in some contexts but not others. This study investigated whether increased utterance length (hence, increased grammatical complexity) adversely affects children's third person singular…

Morphophonological alternations can make target-like production of grammatical morphemes challenging due to changes in form depending on the phonological environment. This article explores the acquisition of morphophonological alternations involving the interacting patterns of vowel deletion and stress shift in Russian-speaking children (aged…

Purpose: Some variability in children's early productions of grammatical morphemes reflects phonological factors. For example, production of 3rd person singular "-s" is increased in utterance-final versus utterance-medial position and in simple versus cluster codas (e.g., "sees" vs. "hits"). Understanding the factors that govern such variability…