By the end of this module, you will be able to:

• Explain how associations between variables are used to answer research questions.
• Explain why random assignment and random selection are used in research.
• Explain why some information about a research study cannot be told to a research participant.

An understanding of the basic elements of research is essential for good research practices. Among the most important elements to be considered are variables, associations, sampling, random selection, random assignment, and blinding. For a more detailed explanation of other research concepts, please see the list of references provided at the end of this curriculum.