I read something interesting about how the behavior and personality traits of children develop. Does it ring true for you?

Only Child
- with no siblings, they learn to be self-entertaining and creative
- being around parents makes them act like little adults
- with no other sibling to compete with or share with, they can become self-centered
- find it difficult when things don't go their way
- might become overly perfectionist

First Born
- bossy (mimic parents), tries to discipline siblings
- feel they are always punished but never the younger siblings
- if parents are overprotective, they become perfectionists/overachievers
- afraid to make mistakes
- find it difficult to admit wrong

Middle Child
- behavior depends on how the first child is treated by parents
- parents tend to forget/pay a lot less attention to the middle child when another baby is born
- if first child is frequently praised by parents, the middle child will find ways to rebel in order to get attention
- notices first child gets special privileges and youngest child gets away with everything
- feels left out, nobody understands, nobody listens, eldest and youngest get all the attention
- seeks friends outside family
- learns to bargain, negotiate, compromise and become diplomatic
- can be the most independent of the siblings
- learn to handle disappointment better than other siblings

Youngest
- parents have more experience now
- parents are much more lenient and allow youngest to get away with more than their siblings
- youngest have less responsibility and become more easygoing, fun-loving, sociable, affection and enjoy making people laugh
- tend to be the class clown
- youngest are aware their older siblings are bigger, faster, smarter and stronger and will try to be different by being even more rebellious
- if older siblings baby them, they may become spoiled and manipulative
- feel they are never taken seriously, not good enough or nothing they do is important