1. Withdrawal—a complete removal of the first intervention while continuing to collect data (given that a successful change in the target had occurred during that first intervention) 2. Reversal—a...

1. Withdrawal—a complete removal of the first intervention while continuing to collect data (given that a successful change in the target had occurred during that first intervention)

2. Reversal—a removal of the first intervention and then applying that intervention to another target during the removal phase, while continuing to collect data on the original target.