Aggression related to Lower IQ
Only a calm spirit is able to focus and concentrate on optimal problem solving. Aggressiveness seems to be related to lower intelligence. This prompts the question if terrorists are stupid?
Even before age 8, the lower IQ child seems to be at a greater risk for developing aggressive behaviors. The process responsible is not clear, but it may be that lower IQ children do not possess the cognitive skills necessary to learn the more complex nonaggressive social problem-solving skills. *
According to this study the critical time to learn problem-solving skills without to descend to aggressive behavior is during childhood.
Aggressiveness, on the other hand, may not affect IQ but it appears to have a continuing effect on intellectual achievement into young adulthood. *
Maybe dogmatism in science and religion is related to lower IQ too?
*** Sources of the quotes:** http://www.rcgd.isr.umich.edu