The administrators at a residential facility wanted to decrease the number of protective holds.Direct care staff at an ABA center were assigned to one of two conditions:One group completed a crisis management training program;another group of workers did not participate in the training.The number of protective holds initiated by each staff was examined for the next year.

What research design methodology should be used?

Group of answer choices

Single case research design would be appropriate.

Group research design would be appropriate.

Either group research design or single case research design could be appropriate.

None of these would be appropriate.