CREDIBILITY OF WITNESS; WITNESS WHO HAS TESTIFIED FALSELY
The credibility or “believability” of a witness should be determined by his or her manner upon the stand, his or her relationship to the parties, his or her fears, motives, interests or feelings, his or her opportunity to have observed the matter to which he or she testified, the reasonableness of his or her statements and the strength or weakness of his or her recollections.
If you believe that a witness has lied about any material fact in the case, you may disregard the entire testimony of that witness or any portion of this testimony which is not proved by other evidence.
NEV. J.I. 2.07