You make a good point. The question is how much of an overlap is there? Is there value in adding a component of raw intelligence to the question (say, applying

You make a good point. The question is how much of an overlap is there? Is there value in adding a component of raw intelligence to the question (say, applying a data structure in a unique and non-obvious way)? It is reasonable to expect that the act of programming fluently entails a sufficient level of IQ such that there is nothing more to be learned from attempting to craft a question that tests intelligence directly? Two bits of information could potentially answer this: does intelligence as a predictor of future job success drop off past a certain level? Also, what does the distribution of IQ look like for those who are fluent coders?