When the different threats to internal validity act differently in different comparison groups, this is known as:
A) Additive and/or interactive effects
B) A testing effect
C) A maturation effect
D) A regression artifacts effect

Question

Quizplus · Accepted Answer

Additive and/or interactive effects occur when threats to internal validity, such as selection, maturation, or history, interact differently across comparison groups, potentially confounding the results of a study.

When the Different Threats to Internal Validity Act Differently in Different