Since this thread started specifically about Stephan Moloneux, and specifically about IQ, perhaps it is best that we post his videos in which he actually interviews experts on both sides of the coin (nature vs nurture). Again, these are experts in the field - like a good cultist.
Dr. Linda Gottfredson. Link:
Dr. Gottfredson has worked extensively in the area, as well as in "race normalizing" IQ tests...
Charles Murray, author of The Bell Curve.
Dr. James Flynn - He argues for the Nature argument. Link:
For those arguing that IQ tests are biased - there has been a lot of work done to make them racially, culturally, and educationally UN-biased. Please watch the first video above. And then detail how the sample IQ test question in the next post exhibits cultural bias.