The prediction is that precocious puberty should correlate to a lower IB. There doesn't seem to be any real study into IQ scores for children experiencing precocious puberty. I only seem to be able to find a study by John Money claiming girls show a higher "Verbal IQ" (Which, if you know anything about John Money, you know is worth less than nothing), another in 1984 with a sample size of 103 girls (52 precocious/51 normal) agreeing with John, and a third one in 2016 with a sample of 30 (15 precocious, 15 normal) finding the precocious have an IQ of 94.
Long story short: Nobody tested their IQs, and what little they... (read more)
I put together a model explaining the link between IQ and the onset of puberty. Ideas only thrive when they're attacked, and I was told this was the kind of place that could manage it.
The core idea is that slowing myelination in the brain extends its plasticity window and encourages more robust and efficient thalamo-cortical integration. By considering latency, the model naturally gives rise to Deco and Kringelbach's Turbulence model by turning cognition into a latency/energy optimization problem.
From what I can tell, it fits a surprising amount of cross-disciplinary evidence, but I need counter-examples more than anything.
You lightly de-myelinate their thalamus, somehow- maybe their whole brain, then pharmacologically suppress re-myelination. The second part is feasible. The first part is still science fiction; the best anyone can manage is total, uncontrolled de-myelination, which will kill you, if you're lucky.