Then I don't understand you.

You wrote:

> Is there a name for being arbitrarily biased against a counterclaim?

Who is arbitrarily biassed against a counterclaim in your opinion here? Debby Sneed who wrote the study? Andrew Curry who wrote the science.org article about the study? gadflyinyoureye who wrote the comment your comment is responding to? Someone else?

> The simple fact that this is posed as a counterclaim itself seems to invoke skepticism...

As it should. I don't see the bias here. Are you saying that someone accepts claims without skepticism but not counterclaims? Who?

I may not have expressed myself properly. Instead of saying arbitrarily biased against the counterclaim, I should have said arbitrarily biased for the implied claim that is being countered.