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Hanushek, Eric A.; Wößmann, Ludger (2011): Sample selectivity and the validity of international student achievement tests in economic research. In: Economics Letters, Vol. 110, Nr. 2: S. 79-82

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Larger rates of exclusion, non-response, and age-specific enrollment are related to better country average scores on international student achievement tests. But accounting for sample selectivity does not alter existing evidence that academic achievement enters importantly in economic growth regressions. ; Sample selection International student achievement tests Economic growth

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