Final answer:
Expert testimony is provided by professionals with extensive knowledge in a field, whereas peer testimony is given by individuals with equal epistemic standing in a specific domain.
Step-by-step explanation:
Expert testimony and peer testimony are two types of testimonial knowledge. Expert testimony is provided by a person who has extensive experience, education, and knowledge in a specific field, making them more reliable. This can include professionals, scientists, or scholars who have expertise in a particular subject. On the other hand, peer testimony is given by someone who is in an equal epistemic position, having the same cognitive ability, evidence, and background knowledge in a specific domain. They may not have formal expertise but can provide personal experiences or informed opinions.