If you want or need to research the practical aspects of juries (as opposed to historical, jurisprudential, or philosophical jury research), here’s a terrific research guide from fellow law librarians:
Jury Verdicts & Jury Instructions Research Guide, from the Georgetown Law Library
There are also various Oregon sources of jury instructions and jury verdict compilations:
1) OSB Jury Instructions (civil and criminal) (print and online, with subscription)
2) Jury Verdicts Northwest (print and online, with subscription)
3) Jury verdict statistics by county: Not every county compiles jury verdict statistics, but Washington County personal injury jury verdict statistics are compiled monthly and you can find the reports at the Washington County Law Library. One day these types of statistics may be available from the Oregon Judicial Department.