Jury Deliberation & Criminal Responsibility Navigator

Deliberation Decision DAG (Mass. Model Instructions)

5 Nodes Evaluated

Visualizing statutory forks under Commonwealth v. McHoul (352 Mass. 544). Click any node or toggle prongs to traverse prosecution burden vs. affirmative lack of responsibility findings.

Active Traversal Pathway: Substantial Capacity Evaluation -> Volitional Prone Examination -> NGRI vs Premeditation Branch

Statutory Fact-Finding & Prongs

Burden: Beyond Reas. Doubt on Sanity

1. Mental Disease or Defect Found? Commonwealth v. Kostka

2. Cognitive Prong: Appreciate Wrongfulness? McHoul Prong 1

3. Volitional Prong: Conform Conduct to Law? McHoul Prong 2

4. Commonwealth Proof of Sanity Mass. G.L. c. 265 / Keita

Verdict Determination: NGRI Complete Defense

Under Massachusetts law, if the Commonwealth fails to prove beyond a reasonable doubt that the defendant was criminally responsible under either the cognitive or volitional prong of McHoul, the jury is required to return a verdict of Not Guilty by Reason of Insanity across applicable counts.

Statutory Disposition: Commitment to Bridgewater State Hospital (c. 123, § 16)

Lesser Included Offenses Evaluated: Murder 1 (Premed/Extreme Atrocity), Murder 2, Involuntary Manslaughter

Deliberation Milestones & Statutory Impasse

Dynamite Charge Eligible

Day 1–2

Initial review of evidence, 3 counts of First Degree Murder, psychiatric expert reports from Dr. Paul Zeizel & Commonwealth evaluators.

Day 3–4

Jury questions submitted regarding statutory definition of "substantial capacity" and distinction between moral vs. legal wrongfulness.

Day 5–6

Foreperson note indicating split viewpoints on volitional capacity; judge instructs continued deliberation under standard charge.

Day 7+

Statutory Impasse Threshold: Under Commonwealth v. Tuey / Commonwealth v. Rodriguez (364 Mass. 87), judge possesses discretion to deliver the Massachusetts dynamite instruction or declare a hung jury mistrial.

Governing Charge Name: Tuey-Rodriguez Charge (MA Allen equivalent)

Dynamite Charge Eligible: true

Prosecution Burden: Must prove defendant was sane beyond a reasonable doubt once evidence of mental defect is introduced

Massachusetts Controlling Jurisprudence

SJC Precedents

MEMORANDUM OF DELIBERATION LAW:

Commonwealth v. McHoul, 352 Mass. 544: Formulated standard adopting ALI Model Penal Code § 4.01. A person is not responsible if at the time as a result of mental disease or defect she lacks substantial capacity either to appreciate the criminality/wrongfulness or conform conduct.

Commonwealth v. Kostka, 370 Mass. 516: Once evidence of insanity is raised, the Commonwealth must prove sanity beyond a reasonable doubt. The presumption of sanity does not satisfy this burden.

Commonwealth v. Keita, 398 Mass. 843: Clarified that jury verdict must explicitly reflect whether the Commonwealth sustained its burden on the specific psychiatric prong raised by evidence of psychosis.

Tuey-Rodriguez Charge: Mandates that minority jurors scrutinize their convictions without yielding conscientious beliefs purely for consensus.