This new edition of Measuring Behaviour is a guide to the principles and methods of quantitative studies of behaviour, with an emphasis on techniques of direct recording and analysis. All sections have been updated, the sections on statistical analysis and research design have been greatly expanded. Those attempting to measure behaviour for the first time are often appalled by the apparent difficulty of the job. Measuring behaviour is a skill, but one which can be mastered given some basic knowledge. The purpose of this book is to provide that basic knowledge in a succinct and easily understood form. Aimed primarily at undergraduate and graduate students in biology and psychology who are about to embark upon behavioural research projects, this book provides a concise review of methodology that will also be of great value to professional scientists of all disciplines in which behaviour is measured. Principles and techniques are explained clearly in simple and concise language. -- from back cover.