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Lockett V. Ohio (1978)

Definition

US Supreme Court ruling under the Eighth Amendment requiring that sentencers in capital cases must be able to consider any aspect of the defendant's character, record, or circumstances as potential mitigation.

Court
US Supreme Court
Year
1978
Constitutional basis
Eighth Amendment
Holding
Sentencer must be able to consider any mitigating aspect of character, record, or circumstances

Common questions

Why is Lockett v. Ohio significant for forensic mental health experts in capital cases?+

It establishes that evidence about a defendant's psychological state, background, or character cannot be categorically excluded from what the sentencer is permitted to consider as mitigation.

Does Lockett require the sentencer to give mitigating evidence a particular weight?+

No. It requires only that the sentencer be allowed to consider the evidence, not that it must be assigned any specific weight or produce a particular sentencing outcome.

Related terms

Atkins V. Virginia (2002)
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CJA 2009 § 52
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Diminished Responsibility
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Miller V. Alabama (2012)
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Recognised Medical Condition
The diagnostic threshold in CJA 2009 § 52, aligning the UK diminished-responsibility defence with DSM-5 / ICD-11 categories; prevents non-diagnostic emotional or...
Roper V. Simmons (2005)
US Supreme Court decision prohibiting capital punishment for offenders who were under 18 at the time of their crime, resting in part...

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