- maturation and growth, development of the brain, motor development, puberty and its psychological
- changes in height and weight: rapid growth in first two years. growth slows until spurt in puberty
- the curve is very logarithmic
- baby learns to lift their head while on their stomach at a very early age
- one of the first things that needs to happen is a strengthening of neck muscles, because babies heads
are over 9000 pounds
- they learn to roll over soon after that.
- they can sit without support when they're about 8 months old, and crawl at 9.
- they can stand at about 14 months and walk shortly after that.
- several theories that try to account for this: first being Maturational Viewpoint (there is a genetically
programmed sequence that unfolds as the infant matures. there is evidence from cross-cultural findings.
this does not take experience into account and places the child as a passive learner. it also doesn't