text: Assessments of JA skills , SP skills , mother-child interactions , and language development were collected at 4 time points : pre- and postintervention and 6 and 12 months postintervention by independent testers .
entities.text: JA
entities.type: intervention
entities.text: SP
entities.type: intervention
entities.text: JA skills , SP skills , mother-child interactions , and language development
entities.type: outcome