科研之友
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摘要
The ability to detect deception is critical in criminal and investigative contexts. Society continues to become more diverse as international travel becomes more commonplace; as such, it has never been so essential to understand the potential impact of speakers' language proficiency on assessing their credibility. Recently, deception researchers have turned their attention to statements provided by nonnative English speakers, thus far yielding inconsistent results. To further investigate this issue, community members, who were classified into 4 English proficiency groups (i.e., fluent, higher proficiency, medium proficiency, and lowest proficiency), provided 4 statements. These included true and false statements that were autobiographical, and true and false statements that were opinion centered. Observers rated the likelihood that these speakers were being truthful or deceptive. Observers' accuracy and discrimination were best for the lowest-proficiency speakers; the other proficiency groups did not differ from each other. This suggests that lie detection is more effective when speakers provide statements in their nonnative language. However, relative to fluent English speakers there was a smaller truth bias for the lowest-proficiency speakers, which suggests that if nonnative speakers provide their statements in their nonnative language they may be judged as more deceptive than their native-speaker counterparts. Overall the present findings highlight the need for additional research, given the disparate results in the literature and the lack of clear policies regarding how nonnative speakers' credibility should be assessed.
- 出版日期2017-8
- 单位西北大学
