Expert Witness Affidavit

An expert witness affidavit is a sworn statement by a qualified expert, providing their professional opinion on a specific aspect of a case. The expert must have specialized knowledge, skill, experience, training, or education in a particular field that is relevant to the case. The affidavit typically includes the expert’s qualifications, the materials they reviewed, the methods they used, and their conclusions and opinions. The expert’s opinion must be based on reliable principles and methods and must assist the trier of fact in understanding the evidence or determining a fact in issue. Expert witness affidavits are often used to support or oppose motions, such as a motion for summary judgment, or to provide evidence at trial. The opposing party has the right to challenge the expert’s qualifications and opinions through cross-examination or by presenting their own expert testimony.