In the early twentieth century,many experts incorrectly attributed the disease pellagra to unsanitary sewage removal instead of a dietary deficiency.Their failure to consider alternative explanations for the disease and to leap to an untested conclusion is an example of:

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The experts' failure to consider alternative explanations and jump to a conclusion without testing is an example of confirmation bias, which is the tendency to favor information that confirms one's pre-existing beliefs or hypothesis.

In the Early Twentieth Century,many Experts Incorrectly Attributed the Disease