Table 1.

Home-recording descriptive statistics

	No. tokens		No. types		No. speakers		Prop mat input		Prop obj.cop.		Utt type ent		Prop short phrase
Rec type	Range	Mean (SD)	Range	Mean (SD)	Range	Mean (SD)	Range	Mean (SD)	Range	Mean (SD)	Range	Mean (SD)	Range	Mean (SD)
Aud	74 to 1,619	714.5 (355.7)	39 to 375	184.5 (64.9)	2 to 16	6.5 (3.4)	0.2 to 1	0.6 (0.2)	0.1 to 0.7	0.5 (0.2)	1.3 to 2.4	1.9 (0.3)	0 to 0.2	0.1 (0.05)
Vid	30 to 635	171.5 (120.9)	13 to 169	58.3 (34.4)	1 to 6	2.9 (1.2)	0 to 1	0.7 (0.3)	0.1 to 0.9	0.6 (0.2)	1.2 to 2.5	1.9 (0.3)	0 to 0.5	0.1 (0.1)

Aud, audio; ent, entropy; mat, maternal; obj.cop., object copresence; Prop, proportion; Rec, recording; Utt, utterance; Vid, video.