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逝世已500年的意大利文艺复兴大师达文西，曾创作许多脍炙人口的著名画作，不过包括名画《蒙娜丽莎》在内的部分作品尚未完成，有人认为是因为他晚年曾中风，左手不灵活所致。

英国一名心理学教授近日提出新理论，指达文西极可能是患有注意力缺乏过动异常症（ADHD），以致留下许多未完成的作品。

伦敦大学心理学与神经科学学院教授卡塔尼，专研自闭症和注意力缺乏过动异常症，他回顾达文西的生活和行为，发现他在童年时就已有注意力缺乏过动异常症的症状，而且非常明显，例如他会在做一样工作时，走去做其他事、爱通宵达旦工作、睡眠时间极少。

此外，他是左撇子，又患有读写障碍，种种特征在注意力缺乏过动异常症患者中常见。

卡塔尼指出，纵使达文西可能患有该症，但他都能克服缺陷，发挥潜力，成为在艺术、解剖、科学等多方面的出色天才。卡塔尼希望借达文西的例子，消除人们认为注意力缺乏过动异常症患者都是低智力或缺乏创意的误解。