Abstract
A study of 1037 representative Dunedin children delivered by a variety of modes was described. The results showed that there were no significant differences in maternal general mental ability, training in child development, or background of child experiences among the five delivery groups studied.
Also, there were no significant differences between children who were spontaneous deliveries or any of the other groups in age at which the developmental milestones were achieved, nor in any of the developmental characteristics assessed.