Southern Louisiana is known for its historic buildings, easy going attitude and humid climate. Though these ingredients mix well for a great place to live or vacation, they can wreak havoc on the health and safety of residents’ homes and work places. This was the case recently in Belle Chasse. There, an individual who rented an office for her business discovered the building contained toxic mold that posed serious health risks. The problem needed immediate remediation. After being contacted, the property owners began removal of the mold. However, the mold, according to the tenant, was so exacerbated that she was forced to abandon the office. The tenant then filed suit against the landlords and their insurance company seeking compensation for business and health related damages.
The importance of this case lies in its examination of expert testimony. In this instance, the tenant sought to have her doctor testify that her chronic fatigue syndrome and other health conditions were directly related to the toxic mold in her office. The landlords claimed it would be erroneous for the court to classify the doctor as an expert and asked that the lawsuit be excused. The court agreed with the landlords and, on appeal, so did the Court of Appeal for the Fourth Circuit.
Expert testimony is governed by the Daubert rule. According to this rule, in order for expert testimony to be heard it must be deemed to be relevant and reliable. The Supreme Court in Daubert provided that relevancy and reliability are determined by a set of factors: (1) testability of the scientific theory; (2) whether the theory has been subject to peer review; (3) knowledge of the theory’s rate of error; and (4) whether the theory has gained general acceptance within the scientific community. These factors are non-exclusive, but provide a solid framework for courts when determining whether to allow an “expert’s” testimony.