Basic Principles of Evidence

In the Certified Fraud Examiner (CFE) body of knowledge, the Basic Principles of Evidence form part of the Law section and govern how information gathered during a fraud examination may be used in legal proceedings. Evidence is anything perceivable by the five senses, plus any proof such as testimony, records, documents, or objects, legally presented at trial to prove a contention and induce belief in the minds of the court or jury. Evidence is generally classified in several ways. Direct evidence proves a fact without inference, such as eyewitness testimony or a confession. Circumstantial evidence proves a fact indirectly, requiring inference, which is common in fraud cases where intent must be inferred from conduct. Evidence can also be categorized as testimonial (oral statements under oath), documentary (writings and records), real (physical objects), or demonstrative (charts, summaries, or models used to illustrate other evidence). For evidence to be admissible, it must be relevant, meaning it tends to make a material fact more or less probable; material, meaning it relates to an issue in dispute; and competent, meaning it was obtained legally and is reliable. Courts may exclude relevant evidence if its probative value is substantially outweighed by unfair prejudice, confusion, or waste of time. Key rules CFEs must understand include the hearsay rule, which generally bars out-of-court statements offered for their truth, though exceptions such as business records, admissions by a party, and statements against interest frequently apply in fraud cases. The best evidence rule requires the original document when its contents are in dispute, though reliable duplicates are often accepted. Authentication requires proving a document or object is what it purports to be. Finally, the chain of custody is critical: fraud examiners must document who collected, handled, and stored each item of evidence to prevent challenges of tampering or alteration, ensuring the evidence remains admissible and credible in court. In the Certified Fraud Examiner (CFE) body of knowledge, the Basic Principles of Evidence form part of the Law section and govern how information gathered during a fraud examination may be used in legal proceedings. Evidence is anything perceivable by the five senses, plus any proof such as testimo…