The Court clarified the requirements for the introduction of an expert witness under NRS 50.275. Moreover, the Court concluded that the district court abused its discretion when it improperly applied the Hallmark factors and disqualified Dr. Johnson from testifying. Accordingly, the Court granted the defendant a new trial.
Dupont, Christi, "Mathews v. State, 134 Nev. Adv. Op. 63 (Aug. 23, 2018)" (2018). Nevada Supreme Court Summaries. 1186.