Which of the following allows psychologists to test a hypothesis and see how a variable causes an effect on a subject?

a)
experimentation

b)
correlation

c)
naturalistic observation

d)
survey/interview method

What is the major body in the legislative branch?

Which statement is a good description of a model? a) models are a description of nature based only on one or two variables. b) models are testable ideas but they are not very to most people. c) models are a description of nature that predicts more accurately than real events. d) models are an approximiation of a real system that omits all but most essential variables in a system.

Who is responsible for maintaining a balanced state budget