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Certain personality traits are often attributed to oldest, middle and youngest children. But a new study found that birth order itself had no effect on character, though it may slightly affect intelligence. 人们往往认为，某些性格特征是专属于排行老大、排在中间或家里最小的孩子的。然而一个新研究发现，出生顺序与性格无关，但可能对智力有些许影响。 Researchers analyzed three large ongoing collections of data including more than 20,000 people: a British study that follows the lives of people who were born in one particular week in 1958, a German study of private households started in 1984 and a continuing study of Americans born between 1980 and 1984. 研究人员分析了来自2万多人的三大组持续收集数据，其来源包括一份英国研究。该研究追踪了1958年某一星期出生的人的生活状况。还有在1984年开始、关于普通家庭的一份德国研究，和关于在1980至1984年间出生的美国人的一个持续研究。 They searched for differences in extroversion, emotional stability, agreeableness, conscientiousness, self-reported intellect, IQ, imagination and openness to experience. They analyzed families with sisters and brothers, large and small age gaps and different numbers of siblings. But no matter how they spliced the data, they could find no association of birth order with any personality characteristic. | 
