= 27d567bc2d48d9f40e9ccc20ea370b15)
ChristianKl comments on Undiscriminating Skepticism - Less Wrong
You are viewing a comment permalink. View the original post to see all comments and the full post content.
= 783df68a0f980790206b9ea87794c5b6)
Loading…= b715d02e85f7b3b4ae65ca3d3e450868)
Subscribe to RSS Feed
Powered by Reddit
= f037147d6e6c911a85753b9abdedda8d)
You are viewing a comment permalink. View the original post to see all comments and the full post content.
Comments (1329)
Here's explanation of my pro-ultra-behaviorist position.
First, I haven't seen any convincing evidence against ultra-behaviorism, but plenty against ultra-innatism. Look at Flynn effect for example. There's absolutely no way a universe in which ultra-innatism is true is compatible with Flynn effect. There has been so many drastic shifts in behavior without slightest shift in underlying genetic makeup of population - abandonment of violence, shift from large families and low offspring investment to small families and high offspring investment, shift from agricultural to urban lifestyle etc. - these are vastly greater than any of the proposed genetic variations. And not a single kind of proposed genetically-based behavioral variation had a convincing genetic marker found for it (yes, there are heredity studies on twins etc. but I find they highly unconvincing). So my estimate of the truth is far closer to ultra-behaviorist end than ultra-innatist end, so much closer than ultra-behaviorism might be a good "tl;dr" version, even if not 100% accurate.
And second, I find ultra-behaviorism instrumentally useful. Overestimating how much you can change your life leads to better outcomes than underestimating it and just giving up.
Arguing that the flynn effect shows that someone else should have a different opinion on the question of how much intelligence is heritable just shows misunderstanding of the meaning of the term of heritablity.
Otherwise it would be logical to say that all of intelligence is due to culture. Why? Let's say all individuals with IQ > 300 happen to be born past the singularity. Past singularity we have the technology to make people intelligent and therefore intelligence can't be truly innate.
Therefore modern biology defines heritability as the variance of a trait within a given population that's due to genetics. In it's essence the question of heritability doesn't only depend on genes but it also depends on the environment.
There nothing wrong with saying that the heritability changes over time. A society where every child can eat as much as it wants has probably a different heritability for IQ than a society where some children don't have enough food and other children who have wealthy parents do have enough food.