The middle child is the hardest birth order to categorize, but whatever traits he develops play off the first born, says Leman.
In the eyes of the middle child, oldest siblings reap all the privileges and the babies get away with everything, so middles learn to negotiate to get what they want.
Here's an explanation as to why your child may develop the traits he does, depending on where he falls in the family tree.
When 4-year-old Jack refused to touch his sandwich unless his mom cut off the crust, 6-year-old Eric stepped in.
They shoulder less responsibility, so they tend to be more carefree, easygoing, fun-loving, affectionate, and sociable, and they like to make people laugh." Just see if your youngest assumes the role of class clown someday. Because lastborns view their older siblings as bigger, faster, and smarter, they may attempt to differentiate themselves by being more rebellious, says Sulloway.
Famous middles: Donald Trump, Elijah Wood, Bill Gates, Princess Diana, and Martin Luther King, Jr.
Out of the mouths of middle children: "No one understands me or listens to what I say." "My big brother gets to do all the fun stuff first, and everyone babies my little sister.
"Middle-borns are the most willing to wheel and deal," Sulloway says.
They are agreeable, diplomatic, and compromising, and they handle disappointment well.