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TagScott Marek

Depth electrode on brain MRI imaging.

Imaging Studies Fail Badly at Linking Brain and Behavior

Aha! news stories about what brain imaging reveals about human behavior are probably based on studies whose findings would not be confirmed by further research.

Brain imaging has shed much light on medical conditions in recent decades. So it was hardly good news for neuroscientist Scott Marek at the University of Washington when the results of a study linking brain function with intelligence in 2000 children produced very counterintuitive results. He and his colleagues had divided the sample into two groups of 1000 and run the same analysis on each — and they did not match. At first, he told Nature, “I stared out of my apartment window in depression, taking in what it meant for the field.” Then the team decided to study the problem on a larger scale, using the three key studies in this type of research, the Adolescent Brain Cognitive Development…