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

Reactivity

Refers to the changes in an individual’s behavior due to the presence of an observer.

6th Edition TCO

D.3 Identify threats to internal validity (e.g., history, maturation).

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