alt Hacker NewsWell I happen to have a phd in that broader domain. It's not censorship, as you imply, but IQ is just way fuzzier a concept than people outside of this area of research think. The popular view is IQ is an objective thing, exactly measurable and so on (the metaphor of brains being computers, essentially). In reality you can put a 14 year old from a bad environment into an optimal environment and their IQ increases by up to 20 points over a view years.
IQ is highly heritable, so I don't think there is any environmental factor that has this big an impact, except in extreme cases like severe malnutrition. Also note that IQ increases with age roughly into early adulthood independently of environment, so the IQ of a 14 year old increasing is a perfectly normal part of the heritable parts of development.