Positive control
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The term positive control has several meanings.
Contents |
[edit] Usage in experimental design
A positive control is an experimental procedure that causes a known effect when applied to a sample population.
The positive control in experiments reveals that a certain procedure works according to expectations and actually gives you the expected results. It shows that the experiment is functioning as it should; in practice this means that your subject(s) are exposed to a substance or procedure with a known effect.
Contrast this with the negative control, (or standard scientific control) where you expose your subject to a substance or condition that is known to have no effect.
[edit] Phrase
One says that positive control has been achieved when what happens is what was intended to happen and that's all that happens.
[edit] See also
[edit] References
[edit] External links
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