All genuine "scientific research" is subject to falsification by peer review before it is excepted. Bias of any sort is one of the main things they look for. That is a major difference between science and religion.

Everybody knows women rule!

Well if a researcher's expectations of a rat's intelligence can affect the speed with which a rat can maneuver through a maze... I am glad we're paying more attention to how so much of our existence is difficult to seperate out from other's existences.

Wow is all I can say-even happens with rats-Sex is a powerful factor between the tester and subject.

I heard this last night on NPR on my way home from work. The gender of the researcher even affects how much pain lab rats feel, which seems crazy (but apparently the male hormones increase the rats' stress levels which minimizes pain). Cool.