For a critique of IQ and Intelligence studies (sic) read The Making of Intelligence by Prof. Ken Richardson, Col U Pr, ISBN 0-231-12004-4.  It's a quick read and, to my mind, devastating.

The following is me.

Putting it bluntly:

1.  the IQ people's research methods are shoddy.  There are no statistically valid, long-term, double-bind studies.  

2.  there is no generally accepted definition of Intelligence

3.  The highest IQ [See 1, above] does not help if you're dead, by the age of five, from starvation.  Thus, we see the influence of the particular environment.  Once environment is given a role the whole notion of "innate" or "genetically based" Intelligence [See 2, above] as a predictor is meaningless.

She believed in nothing; only her skepticism kept her from being an atheist. -- Jean-Paul Sartre