JAMS Inc. added retired Cook County circuit judge Diane J. Larsen to its panel.She will serve as an arbitrator and mediator in a wide variety of disputes, including business and commercial, personal injury and torts, civil rights, class action and mass torts, employment, estate/probate/trusts, insurance and real property.Larsen spent 14 years in the Law Division and six years in the Chancery Division. Prior to taking the bench, she was chief of policy litigation at the city of Chicago Law Department. There she specialized …