Manifest Madness ─ Mental Incapacity in the Criminal Law

Whether it is a question of the age below which a child cannot be held liable for their actions, or the attribution of responsibility to defendants with mental illnesses, mental incapacity is a central concern for legal actors, policy makers, and legislators when it comes to crime and justice.

Understanding the terrain of mental incapacity in criminal law is notoriously difficult; it involves tracing overlapping and interlocking legal doctrines, current and past practices including those of evidence and proof, and also medical and social understanding of mental order and incapacity. Bringing together previously disparate discussions on criminal responsibility from law, psychology, and philosophy, this book provides a close study of mental incapacity defences, analysing their development through historical cases to the modern era. It maps the shifting boundaries between normality and abnormality as constructed in law, arguing that 'manifest madness' - the distinct character of mental incapacity revealed by this interdisciplinary approach - has a broad significance for understanding the criminal law as a whole.

Dr Arlie Loughnan is a Senior Lecturer in the Faculty of Law at the University of Sydney. Her research concerns criminal law and the criminal justice system, with a focus on the relationship between legal doctrines, practices, institutions, and knowledge. Her particular interests are criminal responsibility and non-responsibility, the interaction of legal and expert medical knowledges and the historical development of the criminal law. Dr Loughnan holds a PhD from LSE and an LLM from NYU Law School.