Contra Costa California Jury Instruction — 5.2 Expert Witnesses When Expert Witness Fees Represent A Significant Portion Of The Witness' Income provides guidance for the court and the jury on how to evaluate the testimony of expert witnesses whose income is substantially derived from their expert witness fees. This instruction recognizes the potential bias or influence that such financial dependence may have on the expert's testimony and credibility. In cases where expert witness fees represent a significant portion of the witness' income, the jury is instructed to consider this fact when evaluating the expert's testimony and weighing its credibility. The instruction emphasizes the need for the jury to carefully scrutinize the expert's opinions, methodology, and potential biases that may arise due to their financial dependence on being an expert witness. Key points covered in Contra Costa California Jury Instruction — 5.2 include: 1. Expert Witness Income Dependency: It acknowledges that expert witnesses may rely heavily on their income from providing expert testimony, and these fees may constitute a significant portion of their overall earnings. 2. Potential Bias: The instruction alerts the jury to remain cautious and mindful of any potential bias or influence that may arise from the expert's financial situation. It suggests that the witness may be more inclined to provide opinions that favor the party paying their fees. 3. Scrutinizing Expert Testimony: The instruction urges the jury to thoroughly evaluate the expert's opinions, the methodologies used, the reliability of their conclusions, and the extent to which they align with the overall evidence presented throughout the trial. Overall, Contra Costa California Jury Instruction — 5.2 serves as a reminder to the jury to exercise discernment when considering the testimony of expert witnesses whose financial well-being is significantly tied to their expert witness fees.