The general rule is that every person is qualified to testify, as long as they are competent to do so. State v. R.W., 104 N.J. 14, 19 (1986); State v. Walker, 325 N.J. Super 35, 40 (App. Div. 1999). These tests do not change when assessing a juvenile. State v. R.W., supra, 104 N.J. at 20. As always, whether to permit a particular person to testify is within the discretion of the trial court.