This dissertation was designed to explore what impact interrogation styles had on the believability of a confession. The interrogation styles that were examined were the Reid technique that is the common interrogation style used in United States (U.S.) and the PEACE technique which is more commonly used in the United Kingdom (U.K.). The independent variable in this study was the interrogation style: coercive (Reid) and non-coercive (PEACE). There was one dependent variable: believability of the confession which was rated on a Likert scale. Participants were recruited through a link to Qualtrics. After being provided an informed consent, participants completed several self-report measures including a demographic questionnaire, and then read two vignettes in which they used a Likert scale to rate how coercive they perceived each interrogation style, and how believable they found each confession to be. In one condition they read an interrogation using the Reid technique and another they read an interrogation using the PEACE technique these vignettes were counterbalanced. Participants were then asked to share information about how they reached each of their ratings. Participants were randomly assigned to receive either the Reid technique or PEACE technique vignette first, and then received the second vignette. A Repeated-Measures T test was used to analyze the data. Data analysis showed that participants found the Reid interrogation technique used in the U.S. to be more coercive than the PEACE technique used in the U.K. and were less likely to believe the confession given in the Reid interrogation than the PEACE interrogation.