How accurate is the authors description of your family birth order

MY FAMILY 

The author's description of my family birth order is mostly accurate .Me,my sister and my brother are consider as a middle child.Author said that middle child comes to think of  himself as sometimes better able to do things than other people because they are usually more capable than their younger siblings.Also when they need help,they turn to older siblings or to a parent.I found the similarities on my birth order.The oldest child in my family is my brother and he is responsible,parental as author describes the same thing that the oldest child struggles to be parental,more capable and more responsible than the younger children. About the youngest child,he said they are less able to do many things than other people and are always others around to look after and take care of them.So my youngest brother is also less capable,irresponsible and disorganized.Over all looking at the authors description of the birth order,he is somehow right about the family birth order.In some cases,there will be opposite than what we are thinking.Some child are responsible in their early age.So,it depends on the environment  where we grew up and the place,their people.Every child has some different attitudes and behavior towards others.Very rarely child has the same kind of behavior.