Final answer:
Group deliberation by a jury can lead to a more conservative or extreme verdict, depending on the initial leanings of the group.
Step-by-step explanation:
Research on the effects of group deliberation by a jury suggests that it can lead to a more conservative or extreme verdict, depending on the initial leanings of the group. Group deliberation is known to create a phenomenon called group polarization, where the group's initial attitude is strengthened after discussion. This can result in a verdict that is more extreme than the individual jurors' initial leanings.