Triangulating for Stable Results Single peer-reviewed scientific studies are never enough. Scientists must compete, collaborate, and triangulate on phenomena with multiple methods in multiple labs. This produces stable results. One should ALWAYS be skeptical of the first results. Including one’s own. Skepticism and the call for follow-up studies has been rightfully applied to Jaeggi and colleagues’ study showing fluid intelligence (Gf) gains from training with the dual n-back, back in 2008: Improving fluid intelligence
Small-world cost-efficient brain networks have been naturally selected over the course of evolution. They are largely genetically based. They become less cost-efficient with age, and cost-efficiency predicts IQ.
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