Of or pertaining to the confirmation of one theory or observation by others.(adjective)
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Use "confirmational" in a sentence
"I should go read the full meta-study, but I know that I am just going to exhibit massive confirmational bias for my own teetotaler status."
"He labels such treatises "confirmational journalism", narrowly calibrated to a sliver of audience with the express purpose of reaffirming the viewpoint of the author."
"I was trying to make a point about confirmational bias, albeit using your posts as the example."