(All Steps) (a) A neurologist concluded that "there is no association between a high exposure to aluminum and the deterioration of cognitive functions".
Question: (a) A neurologist concluded that "there is no association between a high exposure to aluminum and the deterioration of cognitive functions". Later on, the association is clearly stated. What type of error did the neurologist make?
(b) Professor Connelly’s study led him to conclude that a new drug developed to control children hyperactivity was more efficient than the standard on the market. His study is replicated by three other researchers who showed the contrary. What type of error did Professor Connelly make?
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