A new study in Acta Psychologica reveals that schooling largely explains IQ differences in identical twins raised apart. When their educations are very dissimilar, their IQ scores can be as different as those between complete strangers.
Isn’t a standard deviation for IQ 20 points or so? If so, what you’re saying is that you took a test 3 times and it gave pretty much the same results all three times.
That’s like getting different blood pressure readings at different times and dismissing the validity of blood pressure tests. I and other people can raise blood pressure with a thought. That doesn’t negate the value of the test, it just indicates one of its limitations.
Isn’t a standard deviation for IQ 20 points or so? If so, what you’re saying is that you took a test 3 times and it gave pretty much the same results all three times.
That’s like getting different blood pressure readings at different times and dismissing the validity of blood pressure tests. I and other people can raise blood pressure with a thought. That doesn’t negate the value of the test, it just indicates one of its limitations.