Purpose: This study reexamines the claim that difficulty forming memories of words comprising uncommon sound sequences (i.e., low phonological neighborhood density words) is a determinant of delayed expressive vocabulary development (e.g., Stokes, 2014). Method: We modeled communicative development inventory data from (N = 442) 18-month-old…

This study is about the role of elicited verbal imitation in toddler word learning. Forty-eight toddlers were taught eight nonwords linked to referents. During training, they were asked to imitate the nonwords. Naming of the referents was tested at three intervals (one minute later [uncued], five minutes, and 1-7 days later [cued]) and recognition…

How to help babies and young children right from birth to become competent in talking as well as emergent literacy is illustrated by research findings as well as with specific clinical stories. Both kinds of knowledge can serve to galvanize parents and teachers to increase awareness of infant and preschool language development and the crucial role…

Intonational development has been an area of interest during the past four decades, from the perspectives of both production and perception. But relatively few conclusions have been made about how children acquire the intonational component of their grammar. To date, prior studies of intonational development have not included a fine-grained…

The goal of this study was to examine the influence of part-word phonotactic probability/neighborhood density on word learning by preschool children with normal vocabularies that varied in size. Ninety-eight children (age 2 ; 11-6 ; 0) were taught consonant-vowel-consonant (CVC) nonwords orthogonally varying in the probability/density of the CV…

This article reviews research on speech and language abilities in people with cri du chat syndrome (CCS). CCS is a rare genetic disorder, with an estimated incidence between 1 in 15,000 and 1 in 50,000 births, resulting from a deletion on the short arm of chromosome 5. In general, individuals have delayed speech and language development, and some…

Phonological neighborhood analyses of tow children's expressive lexicons, maternal input, and an adult lexicon were conducted. In addition to raw counts and frequency-weighted counts, neighborhood size was calculated as the proportion of the lexicon to which each target word is similar, to normalize for vocabulary size differences. Analyses…

The current study attempts to differentiate effects of phonotactic probability (i.e. the likelihood of occurrence of a sound sequence), neighbourhood density (i.e. the number of phonologically similar words), word frequency, and word length on expressive vocabulary development by young children. Naturalistic conversational samples for three…

This study of 80 autistic (ages 6-18), mentally handicapped, and normal children found that more autistic subjects used neologisms and idiosyncratic language than age- and language-skill-matched control groups. More autistic children used words inappropriately that were neither phonologically nor conceptually related to intended English words than…

Twenty-eight toddlers with slow expressive language development were compared to normally speaking age-mates and found to show delayed rather than deviant development in the average level of complexity of their syllable structures, the number of different consonant phonemes produced, and the percentage of consonants correctly produced in…

Sound play is important to child language development in that it contributes to the phonetic substrate, it is a factor in phonological development, and it is something to be learned as part of the socially acceptable use of language. Sound play progresses in three stages: (1) babbling, in which a gradual acquisition of phonetic units is built up…

Observation of severely to profoundly deaf four- to nine-year-olds (N=24) producing three types of multi-morphemic classifier predicates in American Sign Language showed that handshape production was influenced both by morphological and syntactic complexity, while handshape errors were not based on anatomical complexity alone. (26 references)…

This study used several measures to compare 40 toddlers with delays in expressive language and 40 children acquiring language normally. Findings indicated that children with small expressive vocabularies at 2 years of age are not different from their normally speaking peers in terms of hearing, history of ear infections, birth order, or pre- or…

Toddlers with slow expressive language development were compared on three global measures of phonological behavior to age-mates with normal speech development. The measures were the average level of complexity of syllable structures, the number of different consonant phonemes produced, and the percentage of consonants correctly produced in…