Final answer:
It is true that expert witnesses are expected to state and spell their last name in court, an important step for identification and record-keeping. The expert's testimony is key in trials and must be reliable and unbiased.
Step-by-step explanation:
It is true that when testifying as an expert witness, it is common procedure for the witness to state their name and then spell their last name for the court. This process is established to ensure proper identification and accurate record-keeping. Additionally, expert witnesses must establish their credentials and relevance to the case at hand, and their testimony is often critical in shaping the outcome of a trial. The quality of eyewitness testimony is particularly crucial, as it can heavily influence a jury's decision. The reliability of such testimony must be assessed considering factors like the expert consensus in the field, potential biases, and the alignment of the testimony with established scientific knowledge.