1. Massive IQ gains in 14 nations: What IQ tests really measure;Flynn;Psychological Bulletin,1987
2. Raven's and measuring intelligence: The tests cannot save themselves;Flynn;Psychological Test Bulletin,1989
3. Bias in mental testing;Jensen,1980
4. Japan: Land of the rising IQ. A reply to Flynn;Lynn;Bulletin of the British Psychological Society,1987
5. A new series of perceptual tests: Preliminary communication;Penrose;British Journal of Medical Psychology,1936