D. By making a comparison. 10. What may cause the different results of the two studies A. The different countries. B. The analytical methods. C. The income assessments. D. The different ranges of age. 11. Why does the income-related achievement gap concern people A. It will disappear ...
IQ itself is a relative measure in comparison with one's peer age group and doesn't usually change. The average IQ score is volatile during childhood and adolescence, although it is not clear why, but after that, it remains stable throughout life. The average IQ of the population in ...
3.2. Sub-Analysis of Papers from the USA To better compare mean sleep times between specialties, a sub-analysis of papers stemming from the U.S. was conducted, as a direct comparison between data from different countries does not account for differences in permissible work hours, average worklo...