Teachers matter in early childhood: The relation between teacher behaviours and executive function development in toddlerhood.

The current study investigates the role of teacher behaviors in toddlers' executive function development. Teachers' (N = 215) emotional and behavioral support and instructional support were observed through classroom observations when children were 2 years old. Selective attention, verbal short‐term memory, and visuospatial working memory of children (N = 876, 48.4% female) were assessed at age 2 (Mage = 28.60 months, SD = 2.83) and 3 (Mage = 42.38 months, SD = 2.47). Teachers' instructional support positively predicted growth in selective attention, but not verbal short‐term memory or visuospatial working memory. Teachers' emotional and behavioral support did not predict the growth in executive function measures. Findings have implications for understanding the role of teacher‐child interactions in executive function development in toddlerhood. [ABSTRACT FROM AUTHOR]