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What causes low IQ though? Just going to take a guess here and say that < 5% of people actually have "genetic stupidity". Most "low IQ" people are low IQ becau

What causes low IQ though? Just going to take a guess here and say that < 5% of people actually have "genetic stupidity". Most "low IQ" people are low IQ because they went through traumatizing hardships early in life. >People don't want to face cold hard truths. Yeah, no shit. People are too busy trying to survive instead of trying to figure out life's "truths".

Mirioron 7y ago
>What causes low IQ though? Just going to take a guess here and say that < 5% of people actually have "genetic stupidity". Most "low IQ" people are low IQ because they went through traumatizing hardships early in life. I think your statement is unlikely to be true. It will, of course, depend on your specific definitions, but from twin studies we've found that intelligence seems to be heritable.[0] It's even a fairly strong effect: >The heritability of intelligence increases from about 20% in infancy to perhaps 80% in later adulthood.[0] Other studies have found a similar effect.[1][2] Due to us observing this kind of a heritability effect (one that grows stronger as we age), I think it's unlikely that random events, such as trauma and hardships, are the main cause for lower levels of cognitive development. They certainly play a role in it, because they absolutely do affect cognitive development negatively, but I wouldn't bet money on this being the main reason. Note that even though [2] favors the maternal womb environment over genetics as a factor in intelligence, it's still a factor that the individual in question had no control over. [0] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4270739/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4270739/ [1] https://www.ncbi.nlm.nih.gov/pubmed/24791031 https://www.ncbi.nlm.nih.gov/pubmed/24791031 [2] https://www.ncbi.nlm.nih.gov/pubmed/9242404 https://www.ncbi.nlm.nih.gov/pubmed/9242404 >Yeah, no shit. People are too busy trying to survive instead of trying to figure out life's "truths". I think in this case the parent was referring to people who discuss and solve these kinds of problems, rather than the people actually going through them.

Mirioron 7y ago

>What causes low IQ though? Just going to take a guess here and say that < 5% of people actually have "genetic stupidity". Most "low IQ" people are low IQ because they went through traumatizing hardships early in life. I think your statement is unlikely to be true. It will, of course, depend on your specific definitions, but from twin studies we've found that intelligence seems to be heritable.[0] It's even a fairly strong effect: >The heritability of intelligence increases from about 20% in infancy to perhaps 80% in later adulthood.[0] Other studies have found a similar effect.[1][2] Due to us observing this kind of a heritability effect (one that grows stronger as we age), I think it's unlikely that random events, such as trauma and hardships, are the main cause for lower levels of cognitive development. They certainly play a role in it, because they absolutely do affect cognitive development negatively, but I wouldn't bet money on this being the main reason. Note that even though [2] favors the maternal womb environment over genetics as a factor in intelligence, it's still a factor that the individual in question had no control over. [0] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4270739/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4270739/ [1] https://www.ncbi.nlm.nih.gov/pubmed/24791031 https://www.ncbi.nlm.nih.gov/pubmed/24791031 [2] https://www.ncbi.nlm.nih.gov/pubmed/9242404 https://www.ncbi.nlm.nih.gov/pubmed/9242404 >Yeah, no shit. People are too busy trying to survive instead of trying to figure out life's "truths". I think in this case the parent was referring to people who discuss and solve these kinds of problems, rather than the people actually going through them.