As to empirical evidence: I would say the definitive data that there is no distinction in distribution of IQ based on sex would be the norms for cognitive (IQ tests) and achievement assessments, which are all sorted by age, but not sex, because the statistical analyses do not support separate male and female norms (at least for IQ <= 150, which should cover enough GT individuals, as numbers above that are too rare to affect the norm tables).
My data-free speculation is that GT girls may be more successful at masking/"passing", which reduces the likelihood that they will show up at GT-specific meetups. On the average, girls are also more likely to express their poor instructional fit with internalizing, non disruptive behaviors, while boys (as a generalization) tend to be more likely to express it with externalizing, disruptive behaviors, which increases their chances of being identified as -something-.
Last edited by aeh; 12/27/15 03:06 PM. Reason: clarity
