Additional A and B phases to a single-subject design decrease the threats to external validity.

Question

Quizplus · Accepted Answer

Adding more A (baseline) and B (intervention) phases to a single-subject design primarily increases internal validity by demonstrating that changes in behavior are consistently associated with the introduction or withdrawal of the intervention, rather than enhancing external validity, which concerns the generalizability of the findings to other contexts or populations.

Additional a and B Phases to a Single-Subject Design Decrease