First born dating only child

In 1998 psychologist Judith Rich Harris published another comprehensive attack on the concept in (Penguin), dismissing birth order as irrelevant.New Evidence Even so, the case in 2003 against birth-order effects was mainly an absence of good evidence, rather than evidence of an absence.Whether birth order affects intelligence has been debated inconclusively since the late 1800s, although the sheer size of the study (about 250,000 Norwegian conscripts) and the rigorous controls for family size make this study especially convincing.In 2009 my colleagues and I published evidence that birth order influences whom we choose as friends and spouses.

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Of the some 65,000 scholarly articles about birth order indexed by Google Scholar, the vast majority suffer from this problem, making the research difficult to interpret.If spouses correlate on personality, and personality correlates with birth order, spouses should correlate on birth order.Thus, the evidence seems to be shifting back in favor of our common intuition that our position in our family somehow affects who we become. The Norwegian study shows a slight effect on intelligence.Perhaps more telling, family size is associated with many important social factors, such as ethnicity, education and wealth.For example, wealthier, better-educated parents typically have fewer children.

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