Is there a biological explanation for this?

>cranial capacity correlates strongly with intelligence
does this mean that manlets are on average dumber?

>you are too cowardly to reply to me.

Im not a coward, I dont reject facts like you do

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Yes. Within race, height correlates with intelligence. But intelligence correlates more with body size adjusted cranial capacity than absolute cranial capacity (but both correlations are positive)

Between races, intelligence has a weak negative correlation with average height.

and asians on average are smaller too. Their brain to body ratio is even more superior than others.

so there's nothing to do with the arrangement of cortical neurons (their packaging and connections), its just down to MOAR CORES aka volume? then why was einstein's brain only around 1230g

Please tell me how Lynn went to North Korea and got the Norks to do IQ tests. Please tell me how Lynn went to the Congo and got illiterate militia men to do IQ tests.

Not defending Lynn but IQ tests don't require any kind of literacy. They measure pattern recognition.

we all know he extrapolated neighbouring data for 108 nations and that E. Guinea was 10-13 yo mentally challenged children in a spanish institution, and they manipulated the datasets according to economic performance, and that China was modded and qatar not provided the benefit, and that he purposely withheld african 78-83 datasets fearing they 'wouldn't be representative' while working with less for other countiries

and how Poland and Ireland magically shot up the past few decades, etc

still there are differences in intelligence but they're overblown by insecure autists or supremacists with dunning-kruger and an inability to properly interpret studies

There were no IQ tests done. Lynn is just guessing based on his civilizational power ranking fanfic guide. You have to be completely idiotic to think 2 """"Doctors""""" went to 190+ countries, most of which are completely inhospitable shithole warzones and got people to do IQ tests.

why is Ireland so low?