“…For decades, the claim that XYY males tend to exhibit more aggressive, anti-social, and criminal behavior than XY males is controversial, but this hypothesis has never been substantiated (Lenroot et al, 2009). Another more pointed argument was the opposite of overmasculinization; XYY has also been sporadically reported in connection with several cases of disorder of sex development (DSD) (Boczkowski, 1970;Grace and Campbell, 1978;Rivera et al, 1979;Terada et al, 1984;Okamoto et al, 1988;Diego Nuñez et al, 1992;Suzuki et al, 1999;Benasayag et al, 2001;Monastirli et al, 2005;Bardsley et al, 2013;Latrech et al, 2015). Such DSD phenotypes of XYY patients include micropenis, testicular dysplasia, true-hermaphrodite, and complete sex reversal (Supplementary Table 1) (Boczkowski, 1970;Grace and Campbell, 1978;Rivera et al, 1979;Terada et al, 1984;Okamoto et al, 1988;Diego Nuñez et al, 1992;Suzuki et al, 1999;Benasayag et al, 2001;Monastirli et al, 2005;Bardsley et al, 2013;Latrech et al, 2015).…”