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SB 507

Criminal Procedure - Diagnosis of Developmental Disability or Intellectual Disability - Evidence

2025 Regular Session Introduced by Shaneka Henson

SB 507 allows defendants to introduce evidence of developmental or intellectual disability in criminal proceedings to inform culpability and sentencing determinations.

Hearing 2/07 at 10:00 a.m.
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Bill Summary · SB 507

Legislative bill overview

SB 507 establishes that evidence of a defendant's developmental disability or intellectual disability is admissible in criminal proceedings, likely to inform sentencing, mitigation, or competency determinations. The bill clarifies the evidentiary standards for presenting such diagnoses in court and ensures defendants can present this information as part of their defense strategy.

Why is this important

Developmental and intellectual disabilities significantly affect culpability, decision-making capacity, and sentencing outcomes. Allowing this evidence helps ensure courts have complete information when determining guilt, innocence, and appropriate penalties, while potentially reducing disproportionate punishment of individuals with cognitive limitations.

Potential points of contention

  • Definitional scope: Disagreement over which conditions qualify as "developmental" or "intellectual" disabilities and whether the definitions are clear enough to apply consistently across cases
  • Evidentiary standards: Questions about what diagnostic evidence is sufficiently reliable, who can testify as an expert, and how courts should weigh competing evaluations
  • Sentencing implications: Concerns from victims' advocates that disability evidence could be used to inappropriately reduce accountability, versus defense arguments that current practice ignores relevant mitigating factors

Compiled from official sources — confirm details with the bill’s official record.

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