Final answer:
Expert witnesses should answer convincingly with professionalism, refer to notes and work papers, and demonstrate their expertise while remaining unbiased and composed.
Step-by-step explanation:
During a trial or deposition, an expert witness should conduct themselves with professionalism. They need to answer questions convincingly, without hedging their responses, to communicate effectively and maintain credibility. It's essential for expert witnesses to bring notes and work papers because these materials can help them refer to specific details and findings during their testimony; however, they should not rely solely on prepared notes or memorized statements, as answering questions dynamically is crucial. An expert witness must also be perceived as unbiased and knowledgeable, reflecting the consensus among experts when applicable. They must not respond aggressively, as this can diminish their professionalism and reliability.