A California federal judge has certified two nationwide and two California classes of purchasers of JUUL products, relying in part upon the analysis and testimony of Managing Director Hal Singer. Dr. Singer’s Choice-Based Conjoint (CBC) survey and associated analysis were cited by the judge in his motion. The judge noted “plaintiffs’ damages expert Dr. Hal J. Singer proffers a damages model that adequately takes into account significant supply-side factors” and “Singer’s conjoint analyses… support plaintiffs’ motion for class certification.” The motion can be read in full here. Dr. Kevin Caves, Augustus Urschel, and Kathryn Kaduck assisted in the development of the CBC study.