Environmental influences on intelligence have been hard to identify. Does this mean that we are stuck
with our genetic destiny?
Intelligence is subject to physical disorders and genetic and environmental deviations. Speculate about
why intelligence is so vulnerable.
As you look at autism and ADHD, you see several similarities in the causes. Why, for example, do you
think one child exposed to organophosphate pesticides would develop ASD and another might be
diagnosed with ADHD?