What is the primary characteristic of anecdotal evidence?

The primary characteristic of anecdotal evidence is that it is based on personal experience. This type of evidence arises from individual stories or testimonials that highlight a person's experiences, observations, or outcomes regarding a specific situation or treatment. Anecdotal evidence can be compelling because it often resonates with emotions and personal narratives, making it relatable; however, it lacks the rigorous scientific methodology that other forms of evidence possess.

In contrast, scientifically tested data involves systematic methods of inquiry and validation, typically through experimental studies. Controlled experiments are designed to isolate variables and establish cause-and-effect relationships, which is not the case for anecdotal evidence. Peer-reviewed publications undergo a thorough evaluation by experts in the field to ensure the integrity and reliability of the research, further distinguishing them from anecdotal accounts. All of these other forms of evidence heavily rely on structured and repeatable methodologies, whereas anecdotal evidence is subjective and varies from person to person.