Business School, Beijing Normal University, Beijing, China.
State Key Laboratory of Cognitive Neuroscience and Learning, IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, China; Center for Collaboration and Innovation in Brain and Learning Sciences, Beijing Normal University, Beijing, China; Beijing Key Laboratory of Brain Imaging and Connectomics, Beijing Normal University, Beijing, China.
Cortex. 2019 Nov;120:326-339. doi: 10.1016/j.cortex.2019.07.004. Epub 2019 Jul 13.
Though deception is consistently characterized by the slippery-slope effect, i.e., the escalation of small lies over time, differing interactive situations and interacting processes may influence the trajectories of deception. To explore this influence, we investigated naturalistic face-to-face (FF) and computer-mediated face-blocked (FB) interactions using functional near-infrared spectroscopy (fNIRS). Pairs of participants acted as deceivers and receivers in an adapted ultimatum game while brain activity in the right dorsolateral prefrontal cortex (rDLPFC) and temporoparietal junction (rTPJ) was recorded. Comparison of deception in the two types of interactions showed that the FF interactions resulted in more successful deception, as well as acceptance of deception, and prompted more neural activation in the rDLPFC than the FB interactions. We found that the deception magnitude escalated in both FF and FB interactions, but rDLPFC activity during deception diminished over time only in the FF interactions but not in FB interactions, suggesting that the deceivers behaviourally adapted to deception over time in both types of interactions, but the neural adaptation occurred only in the FF interactions. Furthermore, neural adaptation in FF interactions was associated with behavioural switching after deception, indicating that the rDLPFC contributes to deception adaptation and the control of switching between deception and honesty. The FF interactions were also characterized by activity in the rTPJ, which showed an adaptation to deception. These findings highlight the importance of interactive situations in dyadic naturalistic settings for deception and the role of the rDLPFC and rTPJ in the slippery-slope effect in deception.
尽管欺骗行为始终表现出滑坡效应，即随着时间的推移，小谎言逐渐升级，但不同的互动情境和交互过程可能会影响欺骗的轨迹。为了探索这种影响，我们使用功能性近红外光谱（fNIRS）研究了自然面对面（FF）和计算机介导的面对面遮挡（FB）交互。参与者两两配对，在改编后的最后通牒博弈中扮演欺骗者和接受者，同时记录右背外侧前额叶皮层（rDLPFC）和颞顶联合区（rTPJ）的脑活动。比较两种类型的交互中的欺骗行为发现，FF 交互导致更成功的欺骗和对欺骗的接受，并且在 rDLPFC 中引起的神经激活比 FB 交互更多。我们发现，在 FF 和 FB 交互中，欺骗的程度都在逐渐升级，但只有在 FF 交互中，rDLPFC 在欺骗期间的活动随着时间的推移而减少，而在 FB 交互中则没有，这表明欺骗者在两种类型的交互中都随着时间的推移而适应了欺骗行为，但神经适应仅发生在 FF 交互中。此外，FF 交互中的神经适应与欺骗后的行为切换有关，表明 rDLPFC 有助于欺骗适应和欺骗与诚实之间的切换控制。FF 交互还以 rTPJ 的活动为特征，rTPJ 对欺骗也表现出了适应。这些发现强调了在对偶自然情境中互动情境对欺骗的重要性，以及 rDLPFC 和 rTPJ 在欺骗中的滑坡效应中的作用。
