This book presents detailed information on the Meyers Neuropsychological Battery (MNB) and the statistical system used to interpret the neuropsychological data patterns. Using the statistical methods a more consistent and appropriate interpretation can be made. This book contains information on normative data, performance validity, ecological validity, calculating strengths and weaknesses, comparison groups, premorbid estimates, as well as the statistical methods used with the MNB. The validity and reliability of the MNB as well as the ecological validity are all explained. Another area of detailed explanation is performance validity measures. This includes false positive rates as well as frequency of failures and passing rates for each individual performance validity measure. The statistical methods for group comparisons are demonstrated which provides the reader with clear examples of how to apply the statistical methods to any test results. Answers are given to many of the questions asked about the MNB and the statistical methods. A modified Rohling interpretive method (Miller & Rohling, 2001) is incorporated in the MNB, and demonstrates the benefit this model brings to data interpretation and practical application. This book will be an invaluable tool for clinical neuropsychologists, and all who assess and treat patients with cognitive impairment. The book is also for forensic neuropsychologists who wish to use an objective and consistent interpretive method and lawyers and judges who wish to understand neuropsychological data and assessment.