Biology and Criminology

by Anthony Walsh

Published 1 January 2009

Numerous criminologists have noted their dissatisfaction with the state of criminology. The need for a new paradigm for the 21st century is clear. However, many distrust biology as a factor in studies of criminal behavior, whether because of limited exposure or because the orientation of criminology in general has a propensity to see it as racist, classist, or at least illiberal. This innovative new book by noted criminologist Anthony Walsh dispels such fears, examining how information from the biological sciences strengthens criminology work and both complements and improves upon traditional theories of criminal behavior. With its reasoned case for biological science as a fundamental tool of the criminologist, Walsh's groundbreaking work will be required reading for all students and faculty within the field of criminology.


Some of the brightest minds in criminology who were nurtured on the strictly environmentalist paradigm of the 20th century have declared that biosocial criminology is the paradigm for the 21st century. This book attempts to unite this ever-growing field with the premier neurobiological theory of personality, otherwise known as reinforcement sensitivity theory (RST). Anthony Walsh places the highly variable number of biosocial approaches under a single theoretical umbrella, whilst providing a unique integrative framework.

As the leading neurobiological theory of personality and behavior in psychology today, RST focuses around the age-old question of how naturally selfish social animals can achieve their wants and needs without alienating others in their social groups. RST posits that evolution has built into humans three interacting systems: the behavioral approach system; the behavioral inhibition system; and the fight/flight/freeze system. RST identifies the neurobiological and genetic functions underlying each system and has found a cascade of supporting evidence.

Throwing new light on many areas of concern to criminologists, such as psychopathy, violence, ADHD, and schizophrenia, this book will be of interest to scholars and upper-level students in the field. Additional features such as Focus Boxes and diagrams delve into measurement techniques and brain areas.


Social Class and Crime

by Anthony Walsh

Published 21 July 2010

Social class has been at the forefront of sociological theories of crime from their inception. It is explicitly central to some theories such as anomie/strain and conflict, and nips aggressively at the periphery of others such as social control theory. Yet none of these theories engage in a systematic exploration of what social class is, how individuals come to be placed in one rung of the class ladder rather than another, or the precise nature of the class-crime relationship. This book avers that the same factors that help to determine a person’s class level also help to determine that person’s risk for committing criminal acts. Social class is a modern outcome of primordial status-striving and requires explanation using the modern tools of genetics, neurobiology, and evolutionary biology, and this is what this book does. Many aspects of criminal behavior can be understood by examining the shared factors that lead to the success or failure in the workplace and to pro- or antisocial activities.

A biosocial approach requires reducing sociology’s “master variable” to a lower level analysis to examine its constituent parts, which is resisted by many criminologists as highly controversial. However, this book makes plain that the more we know about the nature side of behavior the more important we find the nurture side to be. It makes clear how the class/crime relationship and criminology in general, can benefit from the biosocial perspective; a perspective that many criminological luminaries expect to be the dominant paradigm for the twenty first century.