Sarah Carlson Le Duc
As the Principal of Langscope, Ms. Le Duc provides expert forensic linguistic analysis to uncover objective evidence within written and spoken communication. Her expertise spans authorship attribution, threat assessment, and language evidence in copyright/trademark infringement. By applying rigorous scientific methodologies to linguistic data, Ms. Le Duc assists counsel in identifying idiolectal patterns (i.e., a person's individual linguistic profile), clarifying intent, and evaluating the authenticity of disputed documents. Available for consultation, comprehensive reporting, and expert testimony, she bridges the gap between complex linguistic theory and actionable legal evidence to support both plaintiff and defense strategies.
CV available upon request.
- Copyrights
- Demonstrative Evidence/Exhibits
- Document Examination
- Language & Linguistics
- Trademarks
- Q: Please list your professional accreditations, degrees, licenses, and certificates granted:
- A: M.S. Linguistics - Georgetown University
B.A. Linguistics - Brigham Young University - Q: Please list any teaching or speaking experience you have had, including subject matter:
- A: Roundtable Presenter - American Association for Applied Linguistics: "Disguise in Anonymous Criminal Writing" | 2023
- Q: On how many occasions have you been retained as an expert?
- A: 2026
Expert Witness & Consultant - Authorship Attribution
Retained by: King & Spalding LLP
Matter: Forensic Authorship Attribution / Document Authenticity
- Conducted a forensic comparative analysis of questioned documents vs. known exemplars to determine authorship consistency.
- Submitted a formal Forensic Expert Report outlining methodology and findings to support counsel’s evidentiary objectives.
Retained by: US Government
Matter: Authorship Attribution
2025
Retained by: US Government
Matter: Authorship Attribution
2024
Retained by: US Government
Matter: Authorship Attribution & Threat Assessment - Q: For what area(s) of expertise have you been retained as an expert?
- A: Authorship attribution & analysis; Threat assessment; Anonymous text analysis
- Q: What services do you offer? (E.g.: consulting, testing, reports, site inspections etc.)
- A: Consulting; forensic report for counsel; deposition & trial testimony
Available Upon Request