3.
a disagreement, dispute, or argument
4.
a measure of a person's reasoning ability
5.
the ability to solve difficult problems and make decisions using knowledge
6.
to create something; to plan something (usually a strategy or an idea)
7.
a change which is the result of an action
8.
to make a difference to; to have an effect on
9.
the quality of being complicated; difficult
10.
to investigate or study to reach new conclusions or determine new facts
11.
the study of the nervous system
12.
difficult in a way which tests a person's abilities; demanding
14.
the debate about whether a person's traits are more influenced by their genetics and their genetic inheritence or by their environment and their environmental conditions
