Category: Evidence · Statute: F.S. 90.702 · Source: Florida Legislature
Understanding Expert Testimony (Daubert Standard) in Florida
In Florida criminal cases, expert testimony plays a pivotal role when a judge or jury requires specialized knowledge to understand complex evidence, such as DNA analysis, toxicology reports, or accident reconstruction. Under Florida Statute Section 90.702, the admissibility of this testimony is governed by the rigorous Daubert standard, which Florida formally adopted in 2019 to replace the older Frye standard. This framework tasks the trial judge with acting as a "gatekeeper" to ensure that any expert opinion presented in court is not only relevant but also highly reliable.
To clear the Daubert hurdle, the party presenting the expert must demonstrate that the testimony is based on sufficient facts or data, is the product of reliable principles and methods, and that the expert has reliably applied those principles to the facts of the case. Under this standard, Florida courts scrutinize the scientific validity of the expert's methodology by examining whether it has been tested, subjected to peer review, carries a known error rate, and maintains general acceptance within the relevant scientific community. This prevents "junk science" from improperly influencing the outcome of a trial.
How the Daubert Standard Impacts Bail and Pretrial Release
While Daubert hearings typically occur closer to trial, the reliability of scientific evidence heavily influences pretrial release and Arthur hearings for non-bailable offenses. If the state’s proof of guilt is "evident or the presumption great" based primarily on novel forensic evidence, a defense attorney can challenge the reliability of that evidence using Daubert principles. Demonstrating that the prosecution's key scientific link is unstable can weaken the state's case early on, significantly increasing the defendant's chances of securing a reasonable bail bond.