Definition - What does Juror Misconduct mean?
Juror misconduct refers to behavior or actions that a juror participates in that are unlawful and forbidden by the court. Communicating with people such as witnesses or attorneys outside of the court during a case would be an example of juror misconduct.
Justipedia explains Juror Misconduct
The reason why juror misconduct is not allowed is because the jury is supposed to uphold certain standards to keep things fair and equitable in trials.
If an attorney believes that juror misconduct has occurred, then they can motion for a new trial. If the judge agrees, then a new trial can be given. Another example of juror misconduct would be a juror bringing in evidence to the courtroom.