An article in today's NY Times demonstrates that IQ is correlated with observable differences in the brain. IQ is genetic. Yes, the liberal NY Times now says that!
I.Q. scores and measuring intelligence have long been controversial. Brain-imaging studies by Dr. Thompson and the study group have advanced the field by identifying physical features of the brain that correlate with I.Q.
In 2001, Dr. Thompson reported that based on imaging twins' brains the volume of gray matter in the frontal lobes and other areas correlated with I.Q. and was heavily influenced by genetics.
The fact that IQ is primarily a genetic trait is extremely important to determining social policy. For example, my recommendation that children be assigned a school based on their intelligence received an angry comment. The commenter wrote "Furthermore, the inert intelligence is crap." Not true, the NY Times article demonstrates that intelligence is a genetic trait.
The commenter also wrote, "That a kid can be judged by one test, at any age, putting he/she in a track that will dictate the quality of their elementary, highschool, and ultimately college education, runs contrary to common logic." Sorry, the NY Times article states that IQs are very stable and change very little with age: "The I.Q. was tested when the children entered the program. Further tests were not needed because I.Q.'s are so stable, Dr. Rapoport said."
Our schools cannot be fixed until we acknowledge basic facts of biology and take them into account when designing educational programs.