this is a really terrible book! The verbal section has only 7 passages. It really messes your timing up when you are really taking the test. Plus, the questions are a joke. The physical sciences and bio. sections are filled with errors, which required way too many calculations in a timed test. The mcat is about timing, strategy, and intelligence. This text fails at two out of these three criteria. The latter is due inheritance. And the editor claims that this text is up-to-date(Actual Publishing date is 1991).