Well, well, well, accuracy is a tricky thing to measure, my friend. It depends on what you mean by “accurate”. If you mean a test that is able to give you a score that corresponds to your intellectual abilities, then most IQ tests are “accurate” to some degree. However, if you mean a test that is 100% infallible, well…I hate to break it to you, but that doesn’t exist. IQ tests can only give you an approximation of your abilities, so it’s important to take the results with a grain of salt. So, the short answer is: there’s no “most accurate” IQ test out there, but some are definitely more reliable than others.