If a parent or teacher believes an infant cannot walk before the step reflex disappears, then he/she follows which theory of development?

He or she is following the maturational theory of child development. This was created by Dr. Arnold Gesell and focuses on the normal growth expectations in children. It studies the course, the pattern, and the rate of this maturation as well.

It prohibits any laws that establish a national religion, impede the free exercise of religion, abridge the freedom of speech, infringe upon the freedom of the press, interfere with the right to peaceably assemble, or prohibit citizens from petitioning for a governmental redress of grievances.