The researcher divides his lab rats into two groups and administers IV methamphetamine to one of the groups, in order to determine its effect on the fear-flight response. This is an example of which of the following?
a. Bias
b. Control
c. Correlation
d. Multicausality
ANS: B
Control means having the power to direct or manipulate factors to achieve a desired outcome. The idea of control is very important to research, particularly to experimental and quasi-experimental studies. The greater the amount of control the researcher has of the study situation, the more credible the study findings. The purpose of the research design is to maximize control factors in the study situation. The term bias means to slant away from the true or expected. A biased opinion has failed to include both sides of the question. Correlational research examines linear relationships between two or more variables and determines the type (positive or negative) and degree (strength) of the relationship, not cause.
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