Developmental trajectories of cingulum and ATR MD, RD, and AD. A) Lifetime developmental trajectory of MD, RD and AD from age 0–70. B) Trajectory of MD, RD, and AD across adolescence, age 10–20. Lines represent mean z-scores for each measure across all models included. Both linear and quadratic effects are displayed. Error bars depict standard deviations. MD: mean diffusivity; AD: axial diffusivity; RD: radial diffusivity.