An Important Reason for Using Random Assignment in a Study

question 7

Multiple Choice

An important reason for using random assignment in a study with independent groups is to

• A) prevent any systematic differences between groups on extraneous variables.
• B) be able to generalize to broader populations.
• C) rule out competing interpretations of any differences we find.
• D) a and c

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Definitions:

Developing Countries

Nations with a lower level of industrialization, lower standard of living, and generally lower Human Development Index than developed countries.

Protective Equipment

Gear designed to safeguard individuals from physical, chemical, and biological hazards.

Chlorinated Hydrocarbons

A group of chemical compounds that contain carbon, hydrogen, and chlorine, often used in industrial applications.

Biologically Magnified

The process by which the concentration of a toxin increases as it moves through successive levels of a food chain.