ABA Glossary

By Dana Meller, M.A., BCBA
Edited by Tyra Sellers, J.D., Ph.D., BCBA-D
ABA Glossary by Dana Meller, M.A., BCBA, edited by Tyra Sellers, J.D., Ph.D., BCBA-D

Internal validity

The extent to which an experiment strongly shows that changes in the dependent variable are a direct result of the independent variable and not the result of some other uncontrolled and/or unknown variables.

6th Edition TCO

D.2 Distinguish between internal and external validity.

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