What are the three described types of corroboration?

• A. Emotional
• B. Verbal
• C. Rational
• D. Physical

Answer: (C)

Corroboration in investigations means confirming what someone says by finding independent evidence that supports the claim. Rational corroboration focuses on the logical coherence of the account—the degree to which the details fit together and align with known facts, timelines, and other verifiable information. It involves checking for contradictions, ensuring consistency across multiple sources, and seeing whether the story remains plausible when weighed against objective evidence such as records, surveillance, or physical traces. This makes rational corroboration the strongest form because it relies on verifiable facts and logical connections rather than on mood, phrasing, or unverified impressions. While emotional cues, verbal delivery, or physical clues can provide useful context, they can be misleading or incomplete on their own, so grounding credibility in rational corroboration offers a solid, testable standard.