Which of the following designs has the highest internal validity out of all the rest?
A) ABA design
B) ABAB design
C) Quasi-experimental design
D) Multiple baseline design

Question

Quizplus · Accepted Answer

The multiple baseline design has the highest internal validity out of all the rest because it involves the systematic manipulation of multiple baselines, making it possible to rule out alternative explanations for changes in behavior. This design also allows for replication of the intervention across multiple behaviors or settings, further increasing internal validity. The ABA and ABAB designs are susceptible to carryover effects and do not allow for replication, and quasi-experimental designs lack control over extraneous variables, making them less internally valid.

Which of the Following Designs Has the Highest Internal Validity