5. They’re more creative.
While older siblings have, on average, a slightly higher IQ, younger siblings tend to have the creative edge. According to Sulloway, last-borns have to find their place in the family while avoiding the same route their older siblings took.
Youngest siblings “are eking out alternative ways of deriving the maximum benefit out of the environment, and not directly competing for the same resources as the eldest,” Sulloway told the New York Times in 2007. “They are developing diverse interests and expertise that the IQ tests do not measure.”
This may have an impact on what careers they eventually gravitate toward. A 2011 Career Builder survey found that the youngest in the family is often attracted to creative jobs, such as design, architecture, writing or art.