Hollow diamonds indicate girls, hollow squares indicate boys, solid circles indicate boys and girls. PBDEs measured at ages 2 and 5 years were not included due to small sample sizes at these ages. Sample size for ViMI and VeMI models: prenatal (n=208), age 3-years (n=70), age 7-years (n=158), age 9-years (n=128). Sample size for ACI models: prenatal (n=194), age 3-years (n=63), age 7-years (n=144), age 9-years (n=116).