Reed Lawrence Ian, Stratton Rachel, Rambeas Jessica D
1 Department of Psychology, New York University, New York, NY, USA.
2 Department of Psychiatry, McLean Hospital, Harvard Medical School, Boston, MA, USA.
Evol Psychol. 2018 Oct-Dec;16(4):1474704918814400. doi: 10.1177/1474704918814400.
How do our facial expressions affect the credibility of our words? We test whether smiles, either uninhibited or inhibited, affect the credibility of a written statement. Participants viewed a confederate partner displaying a neutral expression, non-Duchenne smile, Duchenne smile, or controlled smile, paired with a written statement. Participants then made a behavioral decision based on how credible they perceived the confederate's statement to be. Compared to a neutral expression, Experiment 1 found that participants were more likely to believe the confederate's statement when it was paired with a deliberate Duchenne smile and less likely to believe the confederate's statement when it was paired with a deliberate controlled smile. Experiment 2 replicated these findings with spontaneously emitted expressions. These findings provide evidence that uninhibited facial expressions can increase the credibility accompanying statements, while inhibited ones can decrease credibility.
我们的面部表情如何影响我们话语的可信度？我们测试了自然的或抑制的微笑是否会影响书面陈述的可信度。参与者观看了一名同盟伙伴展现出中性表情、非杜兴式微笑、杜兴式微笑或可控微笑，并搭配一条书面陈述。然后，参与者根据他们认为同盟者陈述的可信度做出行为决定。与中性表情相比，实验1发现，当书面陈述与刻意的杜兴式微笑搭配时，参与者更有可能相信同盟者的陈述；而当书面陈述与刻意的可控微笑搭配时，参与者则不太可能相信同盟者的陈述。实验2用自发产生的表情重复了这些发现。这些发现提供了证据，表明自然的面部表情可以提高陈述的可信度，而抑制的面部表情则会降低可信度。
