Listeners judged whether they heard a terminal fall, rise, or a flat final intonation contour in 9 sentences produced by 8 deaf children, aged 8-18. The more slowly the contour fell, the more likely listeners were to perceive the contour as flat, regardless of the amount by which it fell. (Author/JDD)

Ten infants aged 8-12 months were studied to determine whether they would spontaneously imitate the average fundamental frequency or fundamental frequency contour of their speaking partners. Acoustic analyses failed to reveal any tendency by the infants to adjust vocal pitch, amplitude, or duration in home or laboratory settings. (Author/JDD)

It is argued that slowed-down speech is a useful tool for teaching both listening comprehension and pronunciation to students of English as a second language. For listening comprehension, introduction of more, and longer pauses at grammatical boundaries allows more time for processing speech. The greater number of accented words and shorter…