I've heard this called Male Mutation Bias. The Male distribution is wider with more outliers, the female is more narrow with a taller normal distribution. IIRC, in North West Europeans the males are on average 5 IQ higher than females, though adolescent females are higher than same age males due to early onset puberty and maturation.
It makes sense from a biological perspective. Almost all women reproduced until the last 50 years or so, while a LOT of men were reproductive dead ends. It's the same reason you might risk $50 on Dogecoin going to the moon, but you're going to put the majority of your assets into lower risk investments.
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