Problem: I chose the AB design on purpose, instead of something more complicated like the ABAB reversal design. Sure, the ABAB might be stronger for research, but it would mean taking away a helpful therapy from a child just to see what happens. That doesn't seem right to me. Our job is to protect and support the kids we work with, not put them through extra stress for the sake of science. The AB design lets us gather good information and still do what's best for the child. Explain. Need Assignment Help?