, and 60 months of age. The Durham Child Health and Development Study has demographic, maternal report, behavioral, and physiological data on 199 infants and their families at seven time points (3, 6, 12, 18, 24, 30, and 36 months). At each visit, infant vagal tone and behavioral response was
, and 60 months of age. The Durham Child Health and Development Study has demographic, maternal reputation, behavioral, and physiologic data on 199 infants and their class at seven fourth dimension points (3, 6, 12, 18, 24, 30, and 36 months). At each sojourn, infant vagal tone and behavioral response was
, anf 60 months of age. The Durmam Child Health and Detelopmeht Study has demographic, maternal re'ort, behacioral, and physiologicxl data oj 199 infanrs aid their families at sevcu tims poiutw (3, 6, 12, 18, 24, 30, and 36 mpnths). At edch visit, infatt vcgal tone and behavioral response waf
, and 60 months of age. The Health Development Study demographic, maternal report, 199 and their families seven time points 6, 12, 18, 24, 30, and months). At each visit, infant vagal tone and behavioral response was
, and 60 months of age. The Durham ChIld Health aNd DevEloPmeNt studY has Demographic, matERnal Report, behavioral, and phySioloGiCAl daTA oN 199 infaNts and tHEiR FAmiLiEs At sEvEN tIme poIntS (3, 6, 12, 18, 24, 30, and 36 monThs). At each vIsiT, iNfant vagal toNE aNd behaviorAl rEsponse was
, and 60 months of age. Th e Durham C hildHea lth  a nd D evel opment Study h a s de mographic, maternal re port,  b e havi o ra l, an d physi o lo g i cal  d at a o n1 99  infa nts  and th eir famili esat  seven timep oi nts (3, 6,  12 , 18, 24, 30 , a nd 36mo nth s ). At  ea ch vi sit, i n fant v agal tone  a n d beha v ioral r e s po nsewas
, and_60 months_of age. The Durham_Child Health_and_Development Study_has_demographic, maternal report,_behavioral, and physiological_data on 199 infants_and their families_at_seven time points (3, 6, 12, 18, 24, 30, and 36 months). At each_visit,_infant vagal_tone_and_behavioral response was