Piaget was most interested in how ________ think and learn

One function of the nervous system is to send information to and receive information from all parts of the body

Indicate whether the statement is true or false.

In the middle ages, people accused of being witches were often tested by being dunked in a river or pond. If they floated to the surface they were condemned as witches. If they sank and drowned they were posthumously acquitted. This test obviously lacks:

a) reliability. b) standardization. c) validity. d) bias.