An overview of the fundamental principles of evidence law, including the types of evidence, relevance, admissibility, burden of proof, and the role of evidence in the legal system.
Introduction to Evidence Law
Key concepts, sources, and practical principles for understanding how facts are proved in legal proceedings.
| Aspect | Description |
|---|---|
| Definition | The body of rules that governs what information (evidence) may be presented in a trial and how that information is evaluated. |
| Purpose | • Ensure fairness to both parties • Promote truth‑finding • Prevent wasteful or abusive litigation |
| Scope | Applies to civil, criminal, administrative, and arbitration proceedings (with some procedural variations). |
| Source | Typical Content | Jurisdictional Example |
|---|---|---|
| Statutes | Codified rules (e.g., Federal Rules of Evidence in the U.S., Evidence Act 1995 in Australia). | U.S. Fed. R. Evid. §§ 101‑1103 |
| Case Law | Judicial interpretation and development of doctrines (e.g., hearsay exceptions). | R v. Smith (UK) – development of “relevant” evidence. |
| Constitution / Charter | Guarantees that shape admissibility (e.g., right against self‑incrimination). | U.S. 5th Amend.; Canada Charter s. 24(2). |
| Practice Directions & Rules of Court | Procedural details (filing deadlines, disclosure requirements). | Federal Rules of Civil Procedure §§ 26‑37 (U.S.). |
| International Instruments | Standards for cross‑border cases (e.g., Hague Evidence Convention). | Hague Convention on the Taking of Evidence. |
Mnemonic: R‑M‑C‑P (Relevant, Material, Competent, Probative).
| Category | Sub‑type | Typical Use |
|---|---|---|
| Testimonial | • Live witness testimony • Depositions • Affidavits |
Direct narration of facts. |
| Documentary | • Contracts, emails, medical records • Business logs |
Provides written proof; often “best evidence.” |
| Real (Physical) | • Weapons, clothing, damaged property | Tangible objects that can be inspected. |
| Digital | • Computer files, metadata, GPS logs | Treated as documentary but may raise authentication issues. |
| Demonstrative | • Charts, maps, animations | Helps jurors understand complex information. |
| Concept | Definition | Common Exceptions (U.S. Fed. R. Evid.) |
|---|---|---|
| Hearsay | An out‑of‑court statement offered to prove the truth of the matter asserted. | 1. Present Sense Impression (§ 801(d)(2)) 2. Excited Utterance (§ 803(2)) 3. |