Stefan MolyneuxVerified account

So why do older siblings have a higher IQ than younger siblings?

Genes shuffle differently for each its all statistical distribution of events

It's possibly a biological but not genetic factor, such as wombs getting worn out and less suitable for a new embyro after each birth.

"By comparing children who lost an older sibling, for instance, and so were treated as the eldest child, to those who were actually the first-born of their family, the authors showed that the former group had similar IQs to the latter group."

Right. Because the first born has the advantage of not having to compete with other children for attention and food in early development.

See now there is also the fact that my first born took a bit longer to learn things from observing adult. The second one learned much quicker by mimicking older sibling. It’s complicated. Pluses and minuses. In western countries in general we can remove nutrition reasons

Yeah I'm sure it's complicated. I think gender makes a difference, too. Boys tend to take a little longer to learn to speak and potty train at first.

El iQ es una muy mala forma de medir la inteligencia, sobre todo cuando no se sabe bien que es la inteligencia. Jordan fracasaría en una prueba de iQ, pero él no es un fracasado.

Humans have a best achievable IQ where the hard limit is indeed genetics. Same as height. And like with height a steady access to proper nutrition, a certain level of education and the absence of a severe prolonged sickness while growing up are required to utilize that potential

a person can deliberately rewrite their head, how they think and solve problems, how they prioritize, and some of these optimizations allow further development to both specialist and generalist intellect, but it takes time and effort and forethought to do