An expert report is a study written by one or more authorities that states findings and offers opinions.
In law, expert reports are generated by expert witnesses offering their opinions on points of controversy in a legal case and are typically sponsored by one side or the other in a litigation in order to support that party's claims. The reports state facts, discuss details, explain reasoning, and justify the experts' conclusions and opinions.[1]
In medicine, an expert report is a critical assessment of a medical topic, for example, an independent assessment of the cost–benefit ratio of a particular medical treatment.[2]
As part of survey pretesting, an expert report (using the expert review method) identifies potential problems that could affect data quality and data collection by evaluating survey questionnaires and survey translations.[3][4][5]