control experiment

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Related to Scientific control: control experiment, Negative control

experiment

 [ek-sper´ĭ-ment]
a procedure done in order to discover or demonstrate some fact or general truth. adj., adj experimen´�tal.
control experiment one made under standard conditions, to test the correctness of other observations.

con·trol ex·per·i·ment

an experiment used to check another, to verify the result, or to demonstrate what would have occurred had the factor under study been omitted or held constant.
See also: control, control animal.

con·trol ex·per·i·ment

(kŏn-trōl' eks-per'i-mĕnt)
An experiment used to check another, to verify the result, or to demonstrate what would have occurred had the factor under study been omitted.
See also: control

experiment

a study involving a comparison group in which the investigator intentionally alters one or more risk factors in order to discover or demonstrate some fact or general truth.

control experiment
one made under standard conditions, to test the correctness of other observations.
controlled experiment
one in which an exact replica of the animals experimented on are kept without any treatment in order to show what changes occurred in normal animals, reinforcing the view that the observed changes in the experimental animals were in fact the result of the treatment administered.
factorial experiment
one set up in such a way that all levels of each intervention or treatment occur with each level of response.
field experiment
one carried out in normal circumstances and environment, e.g. on the farm or in the cattery rather than in an experimental institution where many of the factors affecting the occurrence or severity of a disease may not operate.
laboratory experiment
carried out in a laboratory where conditions can be almost completely controlled.
latin square experiment
a method of laying out a field experiment in such a way as to avoid bias by physical location.
prospective experiment
those carried out to see what happens if certain influences are applied to an animal or a group of animals. Retrospective experiments are those which set out to explain events that have already been observed.
References in periodicals archive ?
As a result of poor scientific controls, mixed results of the procedure's effectiveness began appearing in the medical journals.
For instance, in 1918, Heinz became the very first company to employ scientific controls and laboratory testing.
The programme looks at the language and terminology of food evaluation, the scientific controls used in a sensory laboratory, screening of sensory panellists and their use of taste and flavour to evaluate samples.
Researchers have criticized these studies for lacking adequate scientific controls.
This independent study was conducted at Radiant's Tucson, Arizona, facility under strict scientific controls with trial protocol approved by an Institutional Review Board.
Siemens AG, Sensidyne, LP, Sierra Monitor Corporation, Status Scientific Controls Ltd.

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