. 2021 Dec 10;65(1):303–319. doi: 10.1044/2021_JSLHR-21-00329

Table 2.

Language variable correlations within and between visits, for Visit 1–Visit 2 changes, and with child TVIP at Visit 2.

Type	Mother variable	Child variable	Mother with child at specified visit			Mother change with child change	Child TVIP with
Type	Mother variable	Child variable	Visit 1–1	Visit 1–2	Visit 2–2	Mother change with child change	Mother variable	Child variable
Production	MLUw	MLUw	.31^**	.18	.27^**	.24^**	.28^**	.10
	MLUw	NDW	.22^*	.16	.13
	NDW	MLUw	.08	.08	−.03
	NDW	NDW	.18^*	.13	.10	.05	.40^**	.14
Discourse	MTL	MTL	−.36^**	−.28^**	−.37^**	−.14	.06	−.15
	MTL	QuesR	−.50^**	−.24^**	−.34^**
	MTL	Resp%	−.84^*	−.33^**	−.78^**
	QuesR	MTL	−.35^**	−.26^**	−.53^**
	QuesR	QuesR	−.11	−.27^**	−.16	.21^*	.35^**	−.06
	QuesR	Resp%	.07	−.05	−.09
	Resp%	MTL	−.48^**	−.36^*	−.60^**
	Resp%	QuesR	−.21^*	−.10	−.17^**
	Resp%	Resp%	−.21^**	−.15	−.25^**	−.12	.04	~.0

Note. MLUw = mean length of utterance in words; NDW = number of different words (10 min adjusted); MTL = mean turn length in utterances (higher values indicate less turn-taking); QuesR = question rate (per 10 min); Resp% = percentage response to question. N = 119 except 109 for Test de Vocabulario en Imágenes Peabody: Adaptación Hispanoamericana (TVIP; Dunn et al., 1986) and 115 for mother Resp%. Statistics are Pearson correlations. Children's mean ages at Visits 1 and 2 were 2.5 and 3.6 years, respectively.

p < .05.

^**

p < .01.