Differences and secular trends in childhood IQ trajectories in Guatemala City.

Intelligence · 2020 · PMC7263732 · PMID 32508371

Europe PMC DOI

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a negative trendno p-value reported

The internal conflict may have introduced a negative trend in in both HAZ and IQ, while the economic growth may have caused a trend toward higher HAZ and IQ.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.