A nonconcurrent design is especially problematic for strong conclusions because:
A) treatment is implemented in one baseline when another baseline is still under the control condition
B) it is essentially two (or more) independent ab comparisons
C) implementation of treatment is staggered across baselines
D) the intervention is not concurrently implemented across baselines at the same time

Question

Quizplus · Accepted Answer

A nonconcurrent design is problematic because it involves separate AB comparisons that do not allow for the control of time-related variables, making it difficult to draw strong causal conclusions.

A Nonconcurrent Design Is Especially Problematic for Strong Conclusions Because