Janelle pretends that a cup is a hat. Janelle grasps the concept of

According to Kelly, the scientist’s main goal is to

A) reduce uncertainty. B) desacralize humans. C) discover general laws. D) equate lower animals with humans.

Genes play a role in pubertal timing as is demonstrated by ______.

A. puberty triggers being able to be tracked B. identical twins experiencing menarche in puberty at the same time C. few consistent reasons for why puberty occurs D. siblings of all ages experience puberty at about the same age