CPI Communication & Documentation Skills 3 — Questions and Answers
Question 1: When documenting a scene, an investigator should use measurements and photographs together because:
- Photos alone are not admissible as evidence
- Photographs provide context while measurements establish precise spatial relationships (Correct answer)
- Measurements are required by law in all jurisdictions
- Photos without measurements violate chain of custody rules
Correct answer: Photographs provide context while measurements establish precise spatial relationships
Photographs capture visual context while measurements provide objective spatial data, and together they create a complete, defensible scene record.
Question 2: Which interviewing technique involves repeating the witness's own words back to them to encourage elaboration?
- The Reid Technique
- Active listening with mirroring (Correct answer)
- The Zeigarnik method
- Baseline questioning
Correct answer: Active listening with mirroring
Mirroring — repeating key words or phrases — is an active listening technique that signals engagement and prompts the witness to continue elaborating.
Question 3: In a formal investigative report, hearsay information should be:
- Excluded entirely from all reports
- Clearly attributed to its source and identified as unverified (Correct answer)
- Presented as established fact if deemed reliable
- Placed in a separate classified appendix
Correct answer: Clearly attributed to its source and identified as unverified
Hearsay must be attributed to its source and labeled as unverified so the reader understands its evidentiary limitations.
Question 4: A surveillance log entry should include all of the following EXCEPT:
- Date, time, and location
- The investigator's personal opinions about the subject's character (Correct answer)
- Description of observed activities
- Vehicle descriptions and license plate numbers
Correct answer: The investigator's personal opinions about the subject's character
Surveillance logs must contain objective, factual observations; personal opinions about a subject's character are irrelevant and undermine report credibility.
Question 5: When presenting findings to legal counsel, a CPI should prioritize:
- Oral briefings only to prevent document discovery
- Providing complete, accurate information including findings that may be unfavorable (Correct answer)
- Withholding raw evidence to maintain investigative privilege
- Summarizing only favorable findings to support the case theory
Correct answer: Providing complete, accurate information including findings that may be unfavorable
A professional investigator must present complete and accurate findings to counsel, including unfavorable information that may affect legal strategy.
Question 6: The primary reason an investigator should avoid leading questions during witness interviews is that they:
- Are prohibited by federal law during private investigations
- Can contaminate the witness's memory and produce unreliable information (Correct answer)
- Extend interview duration unnecessarily
- Violate Miranda requirements in civil investigations
Correct answer: Can contaminate the witness's memory and produce unreliable information
Leading questions suggest the desired answer and can distort or contaminate what the witness independently recalls.
Question 7: Authentication of a digital document for inclusion in an investigative report typically requires:
- Printing a physical copy and hand-signing it
- Establishing a hash value or digital signature to verify the file has not been altered (Correct answer)
- Obtaining notarization from a licensed notary public
- Conversion to PDF format before submission
Correct answer: Establishing a hash value or digital signature to verify the file has not been altered
Cryptographic hash values (such as MD5 or SHA-256) verify that a digital file's contents have not changed since it was collected.
CPI Communication & Documentation Skills 3
When documenting a scene, an investigator should use measurements and photographs together because: