The five-question test for diagnosing autism

An independent researcher has proposed a five-question test that he claims can definitively determine if someone is autistic. According to this researcher, the test involves asking questions about crying frequency, laughter frequency, fears, current feelings, and boredom. If someone answers all five questions in a certain way, it suggests they are autistic. If they answer four or fewer questions in that manner, it is seen as proof that they are not autistic. However, the validity and accuracy of this test are questionable, as it lacks peer-reviewed research and relies heavily on the concept of hyperfocus, which the researcher believes is the singular cause of autism.