how to test negative for stupid

The phrase "how to test negative for stupid" is actually the title of a satirical and humorous political book by U.S. Senator John Kennedy from Louisiana. The book uses this phrase as a tongue-in-cheek guide to critique Washington politics and government dysfunction with humor and wit. It is not a literal test or medical procedure, but rather a metaphorical and comedic way to discuss political and bureaucratic incompetence. If the question is about how to metaphorically "test negative for stupid," meaning how to avoid or identify lack of intelligence or poor judgment, there is no official or scientific test for such a concept as it is subjective and often used humorously or insultingly. In sum, "how to test negative for stupid" refers primarily to a book title and a political satire, not an actual test or method to assess intelligence or stupidity in a clinical or educational sense.