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That is one piece of research that does dispute the claim among many that confirm it. About that particular piece of research, the wiki article states (I don't
by throwaway13337 5y ago
That is one piece of research that does dispute the claim among many that confirm it.
About that particular piece of research, the wiki article states (I don't know where to confirm it) "However, in the analysis the datasets from universities were discarded as they were considered possibly biased and insufficient. Instead only data from schools was used for the analysis."
This unfortunately is quite a political topic and, as such, research here can be politically motivated (for and against) so it is tough to break through the noise.
- woodruffw 5y ago> That is one piece of research that does dispute the claim among many that confirm it. That is precisely what a meta-analysis does: it takes all of the individual datapoints, and attempts to find a consistent causative relationship. The absence of one is a strong indicator that the individual pieces of research are varyingly flawed. Science, in its majesty, is never fully settled. But meta-analysis consistently show that each of the individual variability hypothesis are bunk.