Charlou wrote:GreyICE wrote:Double blind has some problems in the real world, and it may have run into some of those.
It's frequently very easy to say that the researchers will not know, but end up in a situation that the researchers actually do not know. Medicine can run afoul of this very badly.
Can you better explain what you mean here, GreyICE?
I can't say for certain, but I think the first part refers to the fact that whilst double-blinded research is good (and triple-blinded is better), in the real world this is sometimes impossible to do. In the Simon Baron-Cohen study the research had to be done in the neonatal unit of the hospital, and even though it might have been possible to blindfold the experimenter who played the part of the "face", and change the clothes of the newborns so they were all the same and remove all indications of gender from the room and cot - this simply would not have been practical (partly, I imagine, because the mothers would have been uneasy with so much disruption to their newborn).
The data they took were assessed by blinded people though, so that's something at least. It's a difficult thing to study because they needed to make sure that the only difference between the stimuli was the social vs non-social aspect of it. So since a mobile moves, they can't use a static picture of a face as a comparison stimuli.
The other problem with that particular study is that some of the babies were tested in the cot, and some were tested in their mother's lap. So no only do you have the unblinded experimenter that could unconsciously alter results, you also have the mother potentially amplifying any unconscious encouragement.
These studies get published because they can still provide us with useful information, as long as we are aware of their limitations.
As for GreyICE's second statement, I'm not too sure what he means.. I think he meant to say:
It's frequently very easy to say that the researchers will not know, but end up in a situation that the researchers actually do not know. Medicine can run afoul of this very badly.
where we sometimes assume that even though it hasn't been specifically controlled for, "I'm sure the researchers probably didn't know about [important information that could affect results]", when in reality they often do, even if they aren't aware of it.
“The real question is not whether machines think but whether men do. The mystery which surrounds a thinking machine already surrounds a thinking man.” - B. F. Skinner.