The court usually considers experience, training, and education to be sufficient grounds for qualification as an expert witness.
An expert witness in a court case is someone, such as a doctor or other professional, who testifies about and provides opinions on subjects and issues raised in the court case. A qualified expert witness is someone who has knowledge, skill, education, experience, or training in a specialised field, according to the Federal Rules of Evidence. These qualifications are usually required of expert witnesses in state courts as well.
The main responsibility of the expert witness is to support the court's decision-making process by offering independent expert/technical analysis and opinion on a particular issue or issues, based on the data provided by those who are advising him.
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