> Did the candidate spend several days working on a small change? Open source is usually a free time pursuit, so quite possibly they did spend several days on

> Did the candidate spend several days working on a small change? Open source is usually a free time pursuit, so quite possibly they did spend several days on a small change because they had better things to do. Or the small change was the result of several days of tracking down a difficult bug. My point was however that whether or not IQ tests are effective, making experienced developers sit through them (or indeed junior developers who may have verifiable academic or other accomplishments) could be seen as insulting or degrading. If your goal is not to unnecessarily piss off good candidates who may then bad-mouth you to their friends or bring up the issue on Glassdoor, then IQ tests - even discarding the legal implications - are perhaps not such a great idea.