Louisiana Code of Evidence Art. 702. Testimony by experts

A. A witness who is qualified as an expert by knowledge, skill, experience, training, or education may testify in the form of an opinion or otherwise if the proponent demonstrates to the court that it is more likely than not that:

B. This Article shall also govern expert witnesses on the issue of memory and eyewitness identification. In a criminal case, if a party seeks to offer the testimony of a memory and eyewitness identification expert under this Article, such expert testimony may be considered for admission only if all provisions of Paragraph A of this Article are satisfied. A memory and eyewitness identification expert's testimony may not be admitted under this Article if there is physical or scientific evidence that corroborates the eyewitness identification of the defendant. An expert's testimony admitted under this Paragraph shall not offer an opinion as to whether a witness's memory or eyewitness identification is accurate.