What do Babies Hear? Analyses of Child- and Adult-Directed Speech

Marisa Casillas, Andrei Amatuni, Amanda Seidl, Melanie Soderstrom, Anne S. Warlaumont, Elika Bergelson


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 child-directed speech more with age than male caretakers did, but only for male infants. Implications for language acquisition and existing classification algorithms are discussed.


 DOI: 10.21437/Interspeech.2017-1409

Cite as: Casillas, M., Amatuni, A., Seidl, A., Soderstrom, M., Warlaumont, A.S., Bergelson, E. (2017) What do Babies Hear? Analyses of Child- and Adult-Directed Speech. Proc. Interspeech 2017, 2093-2097, DOI: 10.21437/Interspeech.2017-1409.


@inproceedings{Casillas2017,
  author={Marisa Casillas and Andrei Amatuni and Amanda Seidl and Melanie Soderstrom and Anne S. Warlaumont and Elika Bergelson},
  title={What do Babies Hear? Analyses of Child- and Adult-Directed Speech},
  year=2017,
  booktitle={Proc. Interspeech 2017},
  pages={2093--2097},
  doi={10.21437/Interspeech.2017-1409},
  url={http://dx.doi.org/10.21437/Interspeech.2017-1409}
}