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builds on previous research

-describes all steps in procedure clearly and completely

-describes all data to be collected

-keeps all variables, except the one being tested, the same

-includes a control (or placebo) for comparison -uses an appropriate group of subjects

-may include a large sample size

-may include multiple trials

-can be reproduced by other investigators to give -similar results

-respects human and animal subjects

*Elements may vary, depending on the problem being studied


The five components of experimental design are:

-Independent Variable

-Dependent Variable

-Constant Variables

-Control group

-Number of Repeated Trials
Good Experimental Design is Simple;

1. simple in Concept ( no complex ideas)

2. simple in execution (not complex to do)

3. simple to replicate (repeat by others)

4. simplest complete result.

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