LEFT FRONTAL EEG ACTIVATION IN THE DEVELOPMENT OF TODDLERS SOCIABILITY

Frontal brain electrical activity (EEG) was measured at 4-months-of-ag e in a group of infants, some of whom were predicted to be behaviorall y inhibited or socially outgoing in early childhood. We found that lef t frontal EEG activation at age 4-months was related to sociability du ring the second year of life. Toddlers who exhibited greater relative left frontal activation at 4-months-of-age displayed more behaviors in dicative of sociability towards a stranger at 14-months-of-age than to ddlers who displayed greater relative right frontal activation at 4-mo nths-of-age.