Which case determined that all types of expert testimony fall under Daubert standards?

The case that established that all types of expert testimony must meet the standards set forth in the Daubert ruling is Kumho Tire v. Carmichael. This Supreme Court decision clarified that the Daubert standard, which pertains to the admissibility of expert witness testimony based on relevance and reliability, applies not only to scientific testimony but also to technical and other specialized knowledge.

Prior to Kumho Tire, the Daubert decision primarily focused on scientific evidence, but this case broadened the application to include any expert testimony. The Court emphasized the need for judges to act as gatekeepers in determining whether the expert evidence is both reliable and relevant, regardless of its discipline. This ruling has significant implications in legal proceedings, influencing how courts evaluate expert testimony across various fields.