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     Adults were asked to evaluate the trustworthiness of people portrayed in 60 photographs while undergoing brain scans, When those ages 26 to 46 labeled a person not trust worthy, their anterior insulas lighted up. But those wasn’t true for those ages 55 to 80.

    研究首先要求23歲到46歲的人觀看60張照片，去評估這些人是否值得信賴這主題，同時針對這些人的腦部作掃描。當23歲到46歲的人評估這些人是不值得信賴時，他們大腦內直覺中心會亮起來，但是55歲到 80歲的人卻不會亮。

    The warning signals that convey a sense of potential danger to younger adults just don’t seem to be there, said Shelley Taylor, the lead researcher.

    Shelley Taylor，此研究的首席研究員表示：會傳遞一種具有潛在危險性信號給年輕人的功能似乎在這些老年人身上完全不存在。

    Researchers also asked 119 older adults ﹝ages 55 to 84﹞and 24 younger adults﹝ages 20 to 42﹞to rate people in photographs as trustworthy, neutral or untrustworthy.

    研究人員同時也要求119名55 到 84歲的老人以及24名20 到 42歲的年輕人將照片中人員分類成值得信任、中立以及不值得信任。

    Signs that they were potentially untrustworthy included insincere smiles, averted gazes and postures that leaned away rather than toward the camera, among others, Dr. Taylor said.

    Dr. Taylor表示：所謂不值得信任的潛在信號包含，受驗者中會顯現出不真誠的微笑，飄移的祝視以及不願傾向照像機的人。