Which characteristic is NOT an essential element of expert witness testimony?

In expert witness testimony, the primary goal is to communicate specialized knowledge to aid the understanding of the court or jury. Clarity is essential, as experts must present their findings and opinions in a way that is understandable to those without specialized technical backgrounds. Simplicity also plays a role; experts should strive to make complex information more accessible without oversimplifying key concepts. Honesty is paramount, as an expert's credibility relies on their integrity and truthfulness when providing testimony.

Complexity, while it may naturally arise from the subject matter, is not a desired characteristic of expert testimony. Instead of being inherently complex, effective expert testimony should strive for clarity and simplicity, allowing the essential elements of the expert's knowledge to be communicated effectively. Thus, complexity does not align with the foundational principles of effective testimony in a legal setting.