Definition
The Risk-Need-Responsivity (RNR) model, developed in Canada by Donald Andrews, James Bonta, and colleagues from the 1980s, is the dominant evidence-based framework for offender rehabilitation. It rests on three linked principles. Risk: match intervention intensity to assessed risk of re-offending — high-risk offenders need intensive programmes, low-risk offenders need light-touch supervision (and may be harmed by intensive intervention). Need: target the dynamic criminogenic factors empirically linked to offending — substance misuse, antisocial cognitions, antisocial peers, employment, family functioning. Responsivity: tailor delivery to the learning style, motivation, and cultural context of the individual.
Programmes that adhere to all three principles consistently outperform those that do not — meta-analyses show average recidivism reductions of around 25 percent for high-fidelity RNR programmes.
Why it matters
Where it shows up
RNR underpins offender-supervision frameworks in Canada, the UK, Australia, and many US states. Tools like the LSI-R / LS-CMI operationalise the risk and need principles; therapist training, supervision, and treatment-integrity scoring operationalise responsivity. Parole boards routinely use RNR-anchored reports.