Table 2.

Frequency of seven features in a subset of 200 cases of overlap (100 between-overlaps, and 100 within-overlaps) extracted from our Switchboard data.

	Between-overlaps (n = 100)	Within-overlaps (n = 100)	Percentage in total (n = 200)
Backchannel or agreement present	74	72	73%
Follows TRP (<500 ms)	23	51	37%
Follows silence (simultaneous start)	21	37	29%
Abandoned turn	21	18	19.5%
Follows disfluency in interlocutor’s turn	4	18	11%
Repeated syllables or words	4	12	8%
Any of the six features above	93	97	95%

Note that observations can exhibit more than one feature at the same time (e.g., cases of overlap after a period of silence involving a backchannel.