This text deals with research on movement and locomotion and is designed to act as a techniques book, with the aim of providing methodological information about procedures, measurement and analysis. Both developmental and conceptual issues are included. The first part of the book covers basic laboratory methodology for measurement of motor activity in a variety of animals, as well as humans. The second section examines species-specific movements, including reflexes, reaching and grasping, swimming and locomotion. The final section of the book provides an overview of statistical and experimental design issues to help the reader plan research projects and interpret findings.