In single-case experiments, a multiple baseline design can be used to control for ________ as a threat to internal validity.
A) history
B) statistical regression
C) reactivity
D) instrumentation change

Question

Quizplus · Accepted Answer

A multiple baseline design involves implementing the intervention at different points in time for different participants, settings, or behaviors. This design allows the researcher to rule out alternative explanations for changes in behavior, such as history (external events that occur at the same time as the intervention and could account for changes). Therefore, the use of a multiple baseline design helps to control for history as a threat to internal validity.

In Single-Case Experiments, a Multiple Baseline Design Can Be Used