What do babies hear? Analyses of child-and adult-directed speech

Conference Paper

Child-directed speech is argued to facilitate language development, and is found cross-linguistically and cross-culturally to varying degrees. However, previous research has generally focused on short samples of child-caregiver interaction, often in the lab or with experimenters present. We test the generalizability of this phenomenon with an initial descriptive analysis of the speech heard by young children in a large, unique collection of naturalistic, daylong home recordings. Trained annotators coded automatically-detected adult speech 'utterances' from 61 homes across 4 North American cities, gathered from children (age 2-24 months) wearing audio recorders during a typical day. Coders marked the speaker gender (male/female) and intended addressee (child/adult), yielding 10,886 addressee and gender tags from 2,523 minutes of audio (cf. HB-CHAAC Interspeech ComParE challenge; Schuller et al., in press). Automated speaker-diarization (LENA) incorrectly gender-Tagged 30% of male adult utterances, compared to manually-coded consensus. Furthermore, we find effects of SES and gender on child-directed and overall speech, increasing child-directed speech with child age, and interactions of speaker gender, child gender, and child age: female caretakers increased their childdirected speech more with age than male caretakers did, but only for male infants. Implications for language acquisition and existing classification algorithms are discussed.

Full Text

Duke Authors

Cited Authors

  • Casillas, M; Amatuni, A; Seidl, A; Soderstrom, M; Warlaumont, AS; Bergelson, E

Published Date

  • January 1, 2017

Published In

Volume / Issue

  • 2017-August /

Start / End Page

  • 2093 - 2097

Electronic International Standard Serial Number (EISSN)

  • 1990-9772

International Standard Serial Number (ISSN)

  • 2308-457X

Digital Object Identifier (DOI)

  • 10.21437/Interspeech.2017-1409

Citation Source

  • Scopus