To evaluate which features of spoken language aid infant word learning, a corpus of infant-directed speech (M. R. Brent & J. M. Siskind, 2001) was characterized on several linguistic dimensions and statistically related to the infants' vocabulary outcomes word by word. Comprehension (at 12 and 15 months) and production (15 months) were…

The first years of life represent a unique window of opportunity for foreign language learning. However, key questions are: How much and what kind of foreign language exposure is needed to ignite learning? We conducted a foreign language (English) intervention in four public Infant Education Centers in Madrid, Spain. Intervention children (N =…

Examines code switching in bilingual infants from a developmental perspective, using micro-focus of conversation analysis. Early switching data from two bilingual children is analyzed in terms of pragmatic choices and constraints. Some adult-like socially-determined switching was observed at an early age, but most early switches were explained by…