We’ve established in earlier entries the following evolutionary paradigm:  Mother’s testosterone levels > progeny maturation rate > social structure proclivity > evolutionary trajectory.

Now, let’s consider a complementary addition.

Continuing yesterday’s discussion, let’s assume Scandinavian female Te, male tE where…..

T = high testosterone
t = low testosterone
E = high estrogen
e = low estrogen

If it is the case that in Scandinavia both sexes evolved the biological, neurological and societal features of neoteny over 5,000 years, then it would seem anomalous according to a foundation hypothesis of this blog and the Theory of Waves.  I am estimating that over the course of human evolution we tended toward matrifocal social structure (females TE, males te) or patrifocal social structure (females te, males TE).

We’ve discussed how Asian patrifocal cultures manifest neoteny in both sexes by encouraging female te and male TE by shifting all hormonal thresholds downward, allowing cooperation within a patrifocal context.  You’d also get a highly aesthetic society with male high E embedding refined discrimination, a matrifocal female attribute, with the male.

It seems possible that low female estrogen might be a powerful determinant of neoteny in females.  This might be the case biologically, though I know of no studies to support this.  High estrogen in males seems to encourage a powerful aesthetic in society, as in Asia and Scandinavia.  Perhaps a combination of the two encourages surges of two-sexed neoteny that transcends social structure to a degree.

In a female sexual-selection-driven matrifocal society, hypothetically a high T female also exhibits high E, tying together a willingness to exercise authority along with caregiving and aesthetic discrimination.  Shifting the high E to the male, lowering it in the females, creates a new balance, shifting to discrimination in the male, a male seeming to focus on specific cooperative, neotenous features in the female.

Male estrogen is never as high as female estrogen, so runaway sexual selection for specific neotenous features I suspect is not engaged, but evidently if male testosterone is lowered, as in the Asian and Scandinavian paradigms, then the influence of estrogen is enhanced, leading to an intense focus by males on female features and a society with a more pervasive aesthetic focus.

So, a pattern is emerging.  Lowering estrogen in the female and raising it in the male encourages strong female neoteny as males become highly discriminating in the mates they choose.  Keeping male testosterone low, as we are hypothesizing in Scandinavian societies, also encourages neoteny in the males.  So, the Scandinavian paradigm now makes sense, I think, with females Te, males tE.  This is not classic matrifocal but a novel hybrid that encourages neoteny in both sexes.  Asian societies also achieve neoteny in both sexes, seemingly also driven by high estrogen in males, compelling males to choose neotenous features in females, but with a general threshold shift downward, allowing neoteny in both sexes in a patrifocal context.

Still, not to belabor the point, we know that testosterone determines maturational delay and acceleration when a child’s maturation rate and social-structure proclivity is set in the sixth week before birth.  If estrogen is involved in a similar dynamic, we’d have an elegant engine behind evolution.  Based upon the conjectures above, an E mother would create an E daughter and e son.  An e mother would birth an e daughter and E son.  And, as with testosterone, we’d expect environmental factors to influence these thresholds before and after birth.

I would hypothesize, with no evidence other than what we observe in our tentative ethnic hormonal constellations, the following:  Mother’s estrogen levels > progeny ability to exercise aesthetic discrimination > social structure proclivity > evolutionary trajectory.


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