The New Jersey Supreme Court held in New Jersey v. J.L.G. (2018) that experts can no longer explain to juries why sexually abused children might deny abuse. The court was influenced by expert testimony that "methodologically superior" studies find lower rates of denial. Examining the studies in detail, we argue that the expert testimony was flawed due to three problems with using child disclosure studies to estimate the likelihood that abused children are reluctant to disclose abuse: the ground truth problem, disclosure suspicion bias, and disclosure substantiation bias. Research identifying groups of children whose abuse can be proven without reliance on disclosure reveals that denial of sexual abuse is common among abused children. 1 | INTRODUCTION In New Jersey v. J.L.G. (2018), the New Jersey Supreme Court re-evaluated the admissibility of expert testimony on child sexual abuse accommodation syndrome (CSAAS). CSAAS describes sexually abused children's secrecy, helplessness, entrapment, delayed disclosure, and retraction (Summit, 1983). The court held that, although scientific evidence supports the proposition that child sexual abuse victims delay disclosure, the other elements of CSAAS are not adequately supported and are not allowed in expert testimony. Specifically, the court found that experts could not explain to juries why sexually abused children might deny abuse. The court was influenced by reviews of the research asserting that "methodologically superior" studies find lower rates of denial.