The biological hypothesis pretty much means genetics. There are a lot of environmental influences (from eating lead paint chips to being deficient in iodine to being dropped on one’s head as a child) that are well-known to affect IQ.
The biological hypothesis pretty much means genetics. There are a lot of environmental influences (from eating lead paint chips to being deficient in iodine to being dropped on one’s head as a child) that are well-known to affect IQ.