The Flynn effect – named after Professor James Flynn of the University of Otago in New Zealand – refers to a phenomenon of rising IQ scores of abstract and visuo-spatial skills over time. Flynn (1987) analysed the trend of rising IQ in 14 countries between 1932 and 1978, providing evidence for rising IQ scores of abstract and visuo-spatial skills: a 13.8-point increase in IQ scores. It means a 0.3-point increase per year, or approximately 3 points per decade. So, in the l