Montgomery V. Louisiana (2016)
Definition
US Supreme Court ruling applying Miller v. Alabama retroactively to prisoners already serving mandatory life-without-parole sentences imposed for crimes committed as juveniles.
- Court
- US Supreme Court
- Decided
- 2016
- Vote
- 6-3
- Related case
- Miller v. Alabama (2012)
- Effect
- Made Miller retroactive on collateral review
Common questions
Why did retroactivity matter here?+
Miller v. Alabama banned mandatory life-without-parole for juveniles going forward, but said nothing about prisoners already sentenced under the old rule. Montgomery held that Miller announced a substantive constitutional rule, which under US retroactivity doctrine must apply even to final convictions on collateral review.
Does Montgomery guarantee release for affected prisoners?+
No. States can comply either by holding a resentencing hearing or by making juvenile offenders eligible for parole consideration, without automatically releasing anyone. The ruling requires a meaningful opportunity for release based on demonstrated maturity, not a guaranteed outcome.
How does this connect to forensic psychology practice?+
Resentencing and parole hearings triggered by Montgomery routinely call on forensic psychologists to assess an offender's maturity, rehabilitation, and risk since the original juvenile offense, distinguishing transient adolescent behavior from entrenched patterns.
Related terms
- Doli Incapax
- Common-law rebuttable presumption that children aged 10-13 are incapable of criminal intent unless the prosecution proves they knew the act was seriously...
- Dual-Systems Model (Steinberg 2008)
- Developmental theory proposing that adolescent risk-taking results from an imbalance between an early-maturing socioemotional brain system and a later-maturing cognitive-control system, producing...
- JJ Act 2015 § 15
- Provision of India's Juvenile Justice (Care and Protection of Children) Act 2015 requiring a preliminary forensic-psychological assessment of 16-17 year olds accused...
- Kent Factors
- Eight criteria articulated in Kent v. United States (1966) for evaluating whether a juvenile should be transferred to adult court, including seriousness...
- MAYSI-2
- Massachusetts Youth Screening Instrument-Second Version; a brief mental-health screening tool for young people in juvenile justice settings, widely used in US detention...
- Miller V. Alabama (2012)
- US Supreme Court ruling prohibiting mandatory life-without-parole sentences for offenders who were under 18 at the time of their offence, on the...
- SAVRY (Structured Assessment of Violence Risk in Youth)
- 24-item structured professional judgement instrument for assessing violence risk in young people aged 12-18, with the strongest multi-jurisdictional validation record of any...