Word structure in early Quechua speech
Evidence from acoustic and articulatory phonetics suggests that linguistic structure is reflected in spoken language patterns. For child language, this interaction between word structure and speech production has the potential to shed considerable light on the status of children’s early word forms-but the topic remains underexplored in child speech. How is morphological structure reflected in children's speech? To answer this, the current study measured the speech patterns of bilingual Quechua-Spanish children (5-10 years) and adults. Coarticulation and duration were measured in two word environments, within morphemes and across morpheme boundaries. Both child and adult participants distinguished between the word environments, but they did so in different ways. Children differentiated between environments via distinct combinations of duration and coarticulation while adults consistently coarticulated more in shorter duration sequences. Additionally, the children’s speech patterns, but not the adults’, were sensitive to prosodic length: children produced increasingly shorter phones in words with more syllables. It is suggested that the differences between adults and children are attributable to adults' faster speaking rate and increased dominance in Quechua.