Research types

Three basic types of research can be identified:

1. Experimental \- Characterised by random assignment to groups, with full control over extraneous variables, and manipulation of independent variables
2. Quasi-experimental \- Characterised by the study and comparison of naturally-occurring groups
3. Non-experimental \- Characterised by study of a single sample, without comparison between groups

For some examples, and to test your knowledge, see the quiz.

## See also

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* Research purposes

## External Links

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* Types of research (alzheimer-europe.org)
* Research types (heart.org)
* Types of Research within qualitative and quantitative (wisc.edu)