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<blockquote data-quote="Kabal" data-source="post: 1102677" data-attributes="member: 4107">Considering the population sizes of Arabs and Gypsies in France and Romania, respectively, sampling bias is not nearly enough to explain the differences vis a vis their neighbors Germany and Poland. There's more awry in the alleged results of that study than could be explained by sampling bias with respect to our Arab and Gypsy colleagues adding some... cognitive diversity. Yes, French whites and German whites should be similar. Most intuitively and in line with other data, Poles then slightly lower, and Romanians slightly lower than Poles.*Hence why one shouldn't put too much stock in comparing differences in absolute IQ estimates across different studies, methodologies, and/or measurements, e.g. 89 to 106 IQs for Poles over a century.What is considered the mean may be different across studies/methodologies/measurements, which will result in different IQ estimates--as well as potential sampling bias, what was used as the &quot;IQ test,&quot; random noise, and other factors. * However, one can readily note relative differences between groups observed over different studies/methodologies/measurements, hence my characterization above.</blockquote>

[QUOTE="Kabal, post: 1102677, member: 4107"] Considering the population sizes of Arabs and Gypsies in France and Romania, respectively, sampling bias is not nearly enough to explain the differences vis a vis their neighbors Germany and Poland. There's more awry in the alleged results of that study than could be explained by sampling bias with respect to our Arab and Gypsy colleagues adding some... cognitive diversity. Yes, French whites and German whites should be similar. Most intuitively and in line with other data, Poles then slightly lower, and Romanians slightly lower than Poles.* Hence why one shouldn't put too much stock in comparing differences in absolute IQ estimates across different studies, methodologies, and/or measurements, e.g. 89 to 106 IQs for Poles over a century. What is considered the mean may be different across studies/methodologies/measurements, which will result in different IQ estimates--as well as potential sampling bias, what was used as the "IQ test," random noise, and other factors. * However, one can readily note [i]relative[/i] differences between groups observed over different studies/methodologies/measurements, hence my characterization above. [/QUOTE]

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