Brothers and sisters, are you ready to hear this? You’ve been battling over this all your lives, and finally, the results are in. A new study by the University of Leipzig in Germany has settled the matter: the eldest child is also the smartest child. The researchers gathered data from IQ and personality tests from three national studies involving more than 20,000 subjects, so it’s a pretty fair sample size. Sorry, younger siblings; you were doomed from the start.