MBE Rules · Evidence
Rule 403 Applications
Rule 403 balancing applications
The rule
Unfair prejudice means undue tendency toward improper inferences — gruesome photos, gang affiliation, prior bad conduct; exclusion requires prejudice to substantially outweigh probative value, a standard favoring admission.
In plain English
Rule 403 of the Federal Rules of Evidence allows a court to exclude evidence if its probative value is substantially outweighed by the danger of unfair prejudice. This means that if the evidence might lead the jury to make improper inferences or decisions based on emotional reactions rather than facts, it can be kept out of the trial.
Worked example
In a murder trial, the prosecution wants to introduce graphic photos of the victim's body to show the brutality of the crime. The defense argues that the photos would unfairly prejudice the jury against the defendant. The judge decides to exclude the photos, finding that their emotional impact substantially outweighs their relevance to the case.
Memory hook
Don't let the gruesome overshadow the genuine; keep evidence fair and focused.
The trap
Exams often present evidence that seems relevant but is accompanied by highly emotional or prejudicial elements, tricking students into misjudging its admissibility. Students may incorrectly assume that all relevant evidence must be admitted without considering the potential for unfair prejudice.
How examiners test it
Questions typically present a scenario with emotionally charged evidence and ask whether it should be admitted, testing the candidate's ability to balance probative value against potential prejudice.
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