This manual is divided into seven chapters and is intended for researchers interested in using our EF battery, as well as for assessors who will be administering it. The individual chapters can be used as stand-alone documents. However, for a complete understanding of the EF battery we advise reading the entire manual. Within this manual you will find a detailed description of the individual tasks and how they were developed through our extensive pilot work and testing. The manual also provides a detailed description of the psychometric properties of the battery and how this provides insight into how the battery should be administered. Finally, in this manual, you will find comprehensive information on how to administer the battery and interpret the scores.