1 IntroductionFor last century has been consistently asserted by almost all experts that is no sex difference in For example: it is now demonstrated by countless and large samples that two main general cognitive abilities - fluid and crystallized intelligence - and women, boys and girls, show no significant (Cattell, 1971, p.131); and females do not differ in (Jensen, 1998, p. 360); on practically all tests now in use, and women have equal average scores (Eysenck, 1981, p. 40); the consistent story has been that and women have nearly identical IQs (Herrnstein & Murray, 1994, p. 275).This consensus that is no sex difference in intelligence was broken in 1994 when was contended by first author that while up to age of 15 to 16 years males and females do have approximately same intelligence except for a small male advantage visualization abilities, from age of 16 to 17 years males begin to show greater intelligence reaching an advantage of 4 to 5 IQ points in adults (Lynn, 1994, 1999). The starting point of this new contention was Ankney's (1992) finding that have a larger average brain size than women, even when this is controlled for body size. Brain size is positively associated with intelligence at a correlation of .40, as shown in metaanalysis of Vernon et al (2000, p.248), so was argued that follows that should have greater average intelligence than women. The usual counterargument here is that use their extra brain space for killing, raping and war, rather than general intelligence.As might be expected, contention that have a higher average intelligence than women was not received with immediate and universal acceptance. Most experts ignored and continued to assert that is no sex difference in For instance, Mackintosh (1996, p.567): there is no sex difference in general intelligence worth speaking of; Butterworth (1999, p.293): women's brains are 10% smaller than men's, but their IQ is average same; Bartholomew (2004, p. 91): men average have larger brains than women but display no significant advantage in cognitive performance; Anderson (2004, p. 829): it is an important finding of intelligence testing that is no difference between sexes in average intellectual ability; Hines (2007, p. 103): there appears to be no sex difference in general intelligence. As recently as 2012, Halpern (2012, p.233) in her book sex differences in intelligence has written that Males and females score identically IQ tests.There have, however, been a few scholars who have addressed issue and confirmed claim that have a higher average intelligence than women. Nyborg (2003) reported a male advantage g of 5.55 IQ points. Jackson & Rushton (2006) reported that among 100,000 17-18 year olds males have an advantage g of 3.63 IQ points SAT, although here could be argued that mediocre females are more likely than mediocre males to take SAT because lower-IQ males tend to be lacking in ambition and have better opportunities for occupational careers that do not require a college education. And Meisenberg (2009) has reported a male advantage of 2.8 IQ points among 22-23 year old whites in United States ASVAB (Armed Services Vocational Aptitude Battery). This difference, however, was not present among blacks. In this study intelligence was also measured as g, and for this was no significant sex difference among 15 year olds among either blacks or whites, but among whites a significant male advantage of 4 IQ points was present among 16 year olds and this increased to an advantage of 6.5 among 22-23 year olds, while for blacks a male advantage of 1 IQ point was present among 16 year olds and this increased to an advantage 2.15 points among 22-23 year olds.While numerous scholars have continued to state that are no sex differences in intelligence, only one who has contested claim that have a higher average intelligence than women is Mackintosh (1996). …