Two studies were performed to estimate the reliability of the Cybex Reactor in assessing agility tasks. In Study 1, participants (n=13) underwent identical testing sessions twice in 1 week. In Study 2, participants (n= 13) underwent identical testing sessions twice in 1 week, once 3 weeks later, and once 6 weeks later. Testing sessions consisted of four identical agility tasks requiring participants to react to cues shown on a video monitor. In Study 1, intraclass correlation coefficients (ICC) were .47 for Day 1 and .75 for Day 2 for time to complete each task. Participants performed faster on Day 2 (p <.05). In Study 2, ICC ranged from .58 to .83. ICC between sessions ranged from .59 to .73. Participants performed significantly faster each successive session except between Weeks 3 and 6 (p <.05). The Reactor appears to be reliable in assessing agility tasks with test–retest intervals of up to 6 weeks.

This chapter examines the rehabilitation of offenders. Much discussion of crime and criminality focuses on the culpability of the offender, the management and control of crime, and the nature and legitimacy of punishment. However, there is another strand of criminological inquiry (and practice) which is more concerned with understanding offenders, appreciating ‘what makes them tick’, and seeking out tools and methods for reintegrating them into society as conventional law-abiding citizens. In effect, such approaches are concerned with identifying the causes and consequences of criminal behaviour and developing interventions which will enable offenders to change their behaviours and thought processes to enable them to take advantage of legitimate opportunities and to live decent lives. The chapter explores some of the beliefs and assumptions which underlie this kind of approach to crime and criminality. It considers some of the implications in terms of criminal justice practices and evaluates the outcomes of rehabilitative approaches. Finally, the chapter reflects on some of the limitations of this perspective on crime, both empirically and theoretically.