Table 4.

Zero-order Pearson Correlations Coefficents between Maternal Vocalizations and Responses and Family Background Factors, for High Risk Families

	BAP-Q Pragmatic Language	ASD Concerns	AOSI Score	Proband SCQ
Maternal total utterance rate	.01	.04	−.21	.01
Maternal total contingent response rate	−.12	.07	−.16	−.29

Note: These correlations were conducted on the subset of HRA infants with available data; for BAP, n =21;Concerns: n = 24; AOSI, n =17; SCQ n = 28.

BAP-Q = Broader Autism Phenotype Questionnaire, AOSI = Autism Observation Scale for Infants, SCQ = Social Communication Questionnaire.