This paper describes the latest stage of an ongoing attempt to update and upgrade CPTED's concepts and actions and link them more closely to developments in architecture, design and crime science. The concept of territoriality, for example, is central to the practice domain of CPTED. Yet territoriality is only vaguely defined within that domain, as are the other core concepts such as activity support and target hardening; and all of them confusingly intersect and overlap. The paper attempts a remedy by developing a suite of definitions in depth, relating the core concepts to various frameworks and discourses developed for crime prevention and design against crime, and more generally exploring ways in which CPTED could become richer and more subtle. It will also consider the 'dark side' of the environment, covering offenders' countermoves to prevention and their own counter-exploitation of space, buildings and what they contain. The ultimate intention is to produce a more rigorous, yet deeper and better-integrated conception of CPTED useful for practice, research and theory alike. The paper should be considered as work in progress, indicating what might be possible and stimulating debate rather than offering a definitive resolution of the issue. Further steps are suggested and constructive contributions from readers are invited.

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It has been debated for some time whether lower rates of personal victimisation among the elderly are due to the fact that ‐ because of fear or other reasons ‐ they shield themselves from situations in which they might be victimised. This ‘differential exposure’ explanation is examined using data from the 1982 British Crime Survey which provides risks for different age/ sex groups and detailed information about respondents' ‘lifestyles’. Looking at evening ‘street’ offences, differences in risks between the age groups change very little when account is taken of different patterns of going out: irrespective of frequency, means of travel, destination and activity, the elderly are still less frequently victimised. Some theoretical and practical implications of the findings are discussed.

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In his 2018 Stockholm prize winner lecture, Goldstein highlighted the need for problem-oriented policing (POP) to be not only effective but also fair. Contributing to the development of POP, this study examines how a wider perspective on problem-solving generally, and scoping in particular, can be adopted to address some of the growing challenges in 21st century policing. We demonstrate that the concept of ‘problem’ was too narrowly defined and that, as a result, many problem-solving models found in criminology are ill-structured to minimize the negative side-effects of interventions and deliver broader benefits. Problem-solving concepts and models are compared across disciplines and recommendations are made to improve POP, drawing on examples in architecture, conservation science, industrial ecology and ethics.