All Contracts Must Be in Writing

question 9

True/False

All contracts must be in writing.

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Definitions:

Control Groups

Experimental groups not exposed to any experimental variable.

Experimental Variable(s)

Factors in an experiment that are manipulated or changed by the researcher to investigate their effect on the dependent variable.

Maturation

In experimental design, the problem of individuals changing over time, most obviously by getting older.

Experimental Research

A scientific approach that manipulates one variable to observe its effect on another, within a controlled environment, to establish cause-and-effect relationships.