[TaxRelief]

"Double-blind" means simply that neither the staff nor the subjects of the experiment know to which group each subject is assigned.

So for instance, if an experiment involved feeding one group of rats the substance being tested and the other group of rats a placebo, the staff would not know which rats were getting the placebo, and neither would the rats. :-)

[Tax-chick]

"Double-blind" means simply that neither the staff nor the subjects of the experiment know to which group each subject is assigned.

Thanks, and I looked at the discussion linked by another poster, as well.

If I understand this correctly, this would be irrelevant for the physical sciences, because the subject of the experiment has no mentation. In addition, the effect of "single blind" experimentation on non-human subjects would be somewhat limited, yes?

Am I right in thinking that this concept is not really applicable to any experimentation that would be relevant to the issue of Darwinian evolution ... or am I on Planet Zongo?