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Beyond a reasonable doubt

Definition

The criminal standard of proof in common-law systems. The prosecution must persuade the jury to this degree before a verdict of guilty can be returned. The US Supreme Court has held it is constitutionally required but has declined to define it further for jury use, a decision that research suggests increases juror confusion.

Related terms

Deliberate indifference
Also called 'willful blindness' or 'conscious avoidance' in some jurisdictions: the doctrine that a defendant cannot escape knowledge of a fact by...
Juror comprehension research
The empirical literature, primarily in psychology and linguistics, that measures how well mock or actual jurors understand legal instructions. Methods include post-instruction...
Pattern jury instructions
Standardised model instructions approved by a state or federal judicial council for use across all cases of a given type. They are...
Preponderance of the evidence
The civil standard of proof, meaning more likely than not, sometimes glossed as 51 percent probability. Jurors often confuse it with reasonable...
Specific intent
A mental state element requiring that the defendant not only performed the act but did so with the purpose of achieving a...

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