While it may seem that finding specific resources online is by itself a test of your intelligence quotient (IQ), all you really need to do is type "IQ test" into your favorite search engine. We entered the phrase into, where else, Yahoo! and found that there is an entire category devoted to just those sorts of mental challenges. You'll find the IQ Testscategory under Psychology > Intelligence, which is in Yahoo!'s Social Science hierarchy.

One of the best sources we found for IQ assessment is Puzz.com, a site that links to a variety of diversions, from analogies to riddles to full-blown intelligence tests. You'll also find links to "high IQ" societies such as Mensa, in case you decide that your scores qualify you to take your place among the world's mental elite.

An interesting problem with online IQ tests is that there doesn't seem to be any recognized standard. If you want to see how you measure up against the world at large, you may have to turn to tests that are more along the lines of the Standardized Aptitude Test (SAT) or other college admission exams. In Yahoo!'s Standards and Testingcategory (under Education), you'll find links to practice tests, training, and related resources like College Board Online.

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