Next Step's MCAT QBook provides 2,000 MCAT discrete questions covering all the sciences, including psychology and sociology. Each question also includes a complete explanation of correct and incorrect answer choices. Students should plan to use this book as a supplement to their MCAT content review to check understanding and identify problem areas to focus study. This book was written from the ground up for the revised (2015 and later) MCAT. Those who purchase a Next Step book also get free access to our online MCAT diagnostic test.