Interrogation questions to native and non-native eyewitnesses: The role of witness credibility

PurposeThis study examined how the language of eyewitnesses (native vs. non-native) and their perceived credibility influence the interrogation questions posed to them.MethodIn a previous study (Raver et al., Frontiers in Psychology, 2023, 14, 1240822), participants, assuming the role of interrogators, watched either a native or non-native speaking eyewitness testify and were then asked to formulate interrogation questions to gather more information, as well as rate the witness's credibility. In the present study, a new set of participants (N = 207) evaluated a subset of these interrogation questions in terms of (1) how leading they were, (2) whether the interrogator cast doubt on something the witness had said and (3) how open-ended they were. The moderating role of witnesses' perceived credibility on question framing was also examined.ResultsResults showed no main effect of language (native vs. non-native) on any question type. For native speakers, lower (vs. higher) credibility led to more expressions of doubt. For non-native speakers, credibility levels (high vs. low) had no effect on question framing.ConclusionThese findings highlight complex patterns in interrogation questioning that vary by witness language and perceived credibility, revealing a critical area for further exploration to mitigate potential cross-linguistic biases. We discuss the study's limitations and advocate for future research in diverse legal contexts to ensure fairness and uphold the integrity of witness testimonies across languages.