For me, little Albert have been and will always be the most cruel experiment ever done. That kid was an orphan and there was nobody to protect him, and he had serious consequences after that in his adult life also, that could never be compensated.

And as a psychologist myself, I think that ethics and spreading the positivity and humanity are way much more important than any data you can get. Let's make better world by showing a good example of how to make peace inside and around yourself, instead of doing experiments when we have no right and ethical conditions for them. :)