@article{ref1,
title="Prosodic Modification and Vocal Adjustments in Mothers' Speech During Face‐to‐face Interaction with Their Two‐ to Four‐month‐old Infants: A Double Video Study",
journal="Social Development",
year="2008",
author="Braarud, Hanne Cecilie and Stormark, Kjell Morten",
volume="17",
number="4",
pages="1074-1084",
abstract="The purpose of this study was to examine 32 mothers' sensitivity to social contingency during face-to-face interaction with their two- to four-month-old infants in a closed circuit TV set-up. Prosodic qualities and vocal sounds in mother's infant-directed (ID) speech during sequences of live interaction were compared to sequences where expressive behaviours were decoupled by presenting either the mothers (Replay 2) or the infants (Replay 1) with a replay record of the partners' former behaviour in a Live 1–Replay 1–Live 2–Replay 2–Live 3 design. Overall, the mothers produced significantly higher amount of ID speech during the live sequences. Compared to the Live 1 sequence, there was a significant reduction in mothers' ID speech during both replay sequences. However, the mothers only recovered ID speech after the Replay 2 sequence, not after the Replay 1. These findings suggest that the emotions signalled by the mothers' ID speech is affected by the contingency of the infant responses.<p />",
language="",
issn="0961-205X",
doi="10.1111/j.1467-9507.2007.00455.x",
url="http://dx.doi.org/10.1111/j.1467-9507.2007.00455.x"
}