Table 1.

Summary of several studies assessing precise turn-timing in infancy.

Study	Bateson, 1975	Elias et al., 1986	Jasnow and Feldstein, 1986	Beebe et al., 1988
Age (in months)	1.5–3.5	3–4	9	4
N	1	6	29	15
Average gap duration in ms (infant)	1370∗	1200	875	800
Average gap duration in ms (mother)	1430∗	750	775	700

^∗Includes preceding utterance duration.