The occurrence of the secular trend in height and weight:
a. has been documented in the U.S. only.
b. has been documented in the U.S. and nearly all European countries.
c. is beginning to disappear in all countries.
d. is found in every country in the world.
Question 2
With coordination of secondary schemes:
a. the child can differentiate between how to achieve a goal and the goal itself.
b. the child is coordinating primary circular reactions.
c. the child engages in actions in a deliberate trial-and-error fashion to learn how things work.
d. the child is still engaging in most repetitions of behaviors by accident.
Occurrence of stem cells at different stages of mammalian development
Normal development of posture and spinal curves. (A) Toddler: Protruding abdomen; lumbar lordosis. (
Laboratory mice demonstrate that genetic differences can have profound effects on the propensity to
The Secular Trend in Menarche in Five Western Nations
Metabolic syndromes: Dealing with Weight Extremes
An additive model for the inheritance of height in the Potsdam Guards. In this example, the guards a