Which threat to the validity of an interrupted time-series design is controlled in the multiple time-series design?
A) selection
B) history
C) instrumentation
D) testing

Question

Quizplus · Accepted Answer

The multiple time-series design controls for the history threat by including a comparison group that is not exposed to the intervention, allowing researchers to differentiate between changes due to the intervention and changes due to external historical events.

Which Threat to the Validity of an Interrupted Time-Series Design