Date of Graduation

Spring 2026

Degree

Master of Science in Speech-Language Pathology

Department

School of Health Care Professions

Committee Chair

Sarah Lockenvitz

Abstract

This study aims to investigate how linguistic variation affects perceptions of credibility in courtroom settings. It focuses on how jurors, judges, and other individuals in the legal system may exhibit bias (consciously or unconsciously) based on how a defendant or witness speaks-- this could include speech disorders as well as differences in dialect, accent, and speech style. Through review of relevant literature, review of a relevant historical case, conducting a survey, and conducting a semi-structured interview, this study explores whether certain speech patterns or characteristics are disproportionately associated with negative judgments during legal proceedings, such as reduced credibility and trustworthiness. It also touches on the potential consequences of such biases on trial outcomes (e.g., verdicts and sentences). This study also considers the role of speech-language pathologists in the legal system, evaluating their potential to assess and address communication-based biases and to support/promote more fair legal proceedings for individuals with speech or language disorders or differences.

Keywords

speech difference, speech disorder, credibility, legal, courtroom, foreign-accented speech, dialects, AAVE, stuttering, lisping

Subject Categories

Speech Pathology and Audiology

Copyright

© Melanie E. Spinnie

Download

Open Access

Share

COinS