Mother-Infant Contingent Vocalizations in 11 Countries
Psychological Science (2015) - Comment
pubmed: 26133571  doi: 10.1177/0956797615586796  issn: 1467-9280  issn: 0956-7976 

Marc H. Bornstein, Diane L. Putnick, Linda R. Cote, O. Maurice Haynes, Joan T. D. Suwalsky