Yup, but "do people click on a blue button than a green button?" could also be accurately described as a psychological experiment. Every single A/B test that involves user interactions could be described as a psychological experiment. Yet we don't hear the mass media outrage directed at literally every other website in existence.
Sure, A/B tests have a psychological component, although the tests don't specifically test for that or they'd be after the reason WHY they clicked on blue vs green. They don't care why, they only care about which got more clicks in order to choose which one to go with. They usually also tend to actually test something, like a feature. What feature was FB A/B testing? They weren't. It was a pure psychological test, with harmful results. You honestly don't see a distinction?
> Yup, but "do people click on a blue button than a green button?" could also be accurately described as a psychological experiment
No it wouldn't. Only to a person who knows nothing about psychology or about experiments would that phrase accurately describe a psychological experiment.
The "how" is the psychological experiment. The hypothesis is the "what", as well as the "why" we are doing this.
There were a lot of ethical failures on the part of Facebook, such as the failure to get informed consent, the failure to review the experiment with an independent review board until after it had occurred, misleading said review board to say that the dataset was previously approved, etc., and all for results that the authors think were not very valuable: https://www.theatlantic.com/technology/archive/2014/06/every...