Our knowledge of crime is based on three types of sources: the criminal justice system, victims, and offenders. For technological and other reasons the criminal justice system produces an increasing stream of information on crime. The rise of the victimization survey has given the victims a much larger role in our study of crime. There is, however, no concomitant development regarding offenders. This is unfortunate because offenders are the experts when it comes to offending.In order to understand criminal behavior, we need their perspective. This is not always a straightforward process, however, and information from offenders is often unreliable. This book is about what we can do to maximise the validity of what offenders tell us about their offending. Renowned experts from various countries present their experiences and insights, with a clear focus on methodological issues of fieldwork among various types of offender populations. Each contribution deals with with a few central issues: * How can offenders be motivated to participate in research? * How can offenders be motivated to tell the truth on their offending? * How can the information that offenders provide be checked and validated? * What can we learn from offenders that cannot be accessed from other sources? * With the aim of obtaining valid and reliable information, how, where and under which conditions should we observe offenders and talk to them?

Our knowledge of crime is based on three types of sources: the criminal justice system, victims, and offenders. For technological and other reasons the criminal justice system produces an increasing stream of information on crime. The rise of the victimization survey has given the victims a much larger role in our study of crime. There is, however, no concomitant development regarding offenders. This is unfortunate because offenders are the experts when it comes to offending.In order to understand criminal behavior, we need their perspective.

This is not always a straightforward process, however, and information from offenders is often unreliable. This book is about what we can do to maximise the validity of what offenders tell us about their offending. Renowned experts from various countries present their experiences and insights, with a clear focus on methodological issues of fieldwork among various types of offender populations. Each contribution deals with with a few central issues:

• How can offenders be motivated to participate in research?
• How can offenders be motivated to tell the truth on their offending?
• How can the information that offenders provide be checked and validated?
• What can we learn from offenders that cannot be accessed from other sources?
• With the aim of obtaining valid and reliable information, how, where and under which conditions should we observe offenders and talk to them?

Putting Crime in its Place: Units of Analysis in Geographic Criminology focuses on the units of analysis used in geographic criminology. While crime and place studies have been a part of criminology from the early 19th century, growing interest in crime places over the last two decades demands critical reflection on the units of analysis that should form the focus of geographic analysis of crime. Should the focus be on very small units such as street addresses or street segments, or on larger aggregates such as census tracts or communities? Academic researchers, as well as practical crime analysts, are confronted routinely with the dilemma of deciding what the unit of analysis should be when reporting on trends in crime, when identifying crime hot spots or when mapping crime in cities. In place-based crime prevention, the choice of the level of aggregation plays a particularly critical role. This peer reviewed collection of essays aims to contribute to crime and place studies by making explicit the problems involved in choosing units of analysis in geographic criminology. Written by renowned experts in the field, the chapters in this book address basic academic questions, and also provide real-life examples and applications of how they are resolved in cutting-edge research. Crime analysts in police and law enforcement agencies as well as academic researchers studying the spatial distributions of crime and victimization will learn from the discussions and tools presented.