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Control group

Definition: In an experiment, a group of subjects matched with an experimental group, but not subject to the treatment under investigation. The control group of an experiment involving human beings is usually unaware of its status.


See perfect rule (1).

See perfect inapplicability.

See perfect group (1).

See perfect eligibility.

1520 Products

1520 Products was established in 2005 with the purpose of entertaining and teaching us on key and important aspects of life (such as marriage, sex, etc) through the playing of games which will allow us to laugh but at the same time pass a message of what is the right or ideal way.

1520 Sex Game

1520 Puzzles

1520 Marriage Game