嘘の隠蔽による認知的負荷と個人特性が注意に及ぼす効果

抄録

The present study explored the effect of cognitive load during lying on attention to stimuli. Ninety-four participants were assigned to one of two groups (i.e., “concealment” or “non-concealment” group). All of them were asked to utter the displayed word in sequence. However, they were asked to utter, a word different from the displayed one when target word was displayed. But participants in the concealment group were asked to cover up that the word was different from the displayed one. In other words, they had to utter a different word as if it was not. After the task, they were asked to write the words that they remembered. The results showed that participants in the concealment group recalled smaller number of words than those in the non-concealment group. However, individual difference in tendency to lie positively predicted the recall rate. People who tended to lie in their daily lives might be more fluent in lying, which could keep the recall rate high. The present study indicated that cognitive load during lying reduce the cognitive resource, which led people to paying less attention to stimuli. This study also implied that measuring attention was one possible way to detect deceptions.