To examine the association between fetal behavior and brain development through childhood, investigators conducted a longitudinal study with 120 normal fetuses in utero through 36 months of age recruited between 2011 and 2018 from Hutzel Women’s Hospital in Detroit, Michigan using continuous four‐dimensional functional magnetic resonance imaging (fMRI). Twelve‐minute fMRI scans were conducted in 120 normal fetuses between 22 and 39 weeks gestational age. Associations between fetal brain functional connectivity, child neurobehavioral development, and maternal stress were evaluated through imaging and standardized questionnaires presented to enrolled mothers. Postnatal motor function was evaluated at 7 (n = 77) and 36 months of age (n = 89) with the motor component of the Bayley Scales of Infant Development.