Rule 701. Opinion Testimony by Lay Witnesses.
If a witness is not testifying as an expert, testimony in the form of an opinion is limited to one that is:
(a) rationally based on the witnesss perception;
(b) helpful to clearly understanding the witnesss testimony or to determining a fact in issue; and
(c) not based on scientific, technical, or other specialized knowledge within the scope of Rule 702.
This rule is identical to F.R.E. 701.
On January 17, 2013, the Rules of Evidence were rescinded and replaced. See Pa.R.E. 101, Comment. Within Article VII, the term inference has been eliminated when used in conjunction with opinion. The term inference is subsumed by the broader term opinion and Pennsylvania case law has not made a substantive decision on the basis of any distinction between an opinion and an inference. No change in the current practice was intended with the elimination of this term.
Adopted May 8, 1998, effective October 1, 1998; amended November 2, 2001, effective January 2, 2002; rescinded and replaced January 17, 2013, effective March 18, 2013.
Committee Explanatory Reports:
Final Report explaining the November 2, 2001, amendments published with the Courts Order at 31 Pa.B. 6384 (November 24, 2001).
Final Report explaining the January 17, 2013 rescission and replacement published with the Courts Order at 43 Pa.B. 651 (February 2, 2013).
The provisions of this Rule 701 amended November 2, 2001, effective January 1, 2002, 31 Pa.B. 6381; rescinded and replaced January 17, 2013, effective in sixty days, 43 Pa.B. 620. Immediately preceding text appears at serial page (303515).
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