8 year olds are tweens as they are between being a child and a teenager.
8 year olds are also considered to be a big kid and not a little kid anymore.
8 years old is a big kid and not really a little kid anymore.
I would define that an little kid is from 4 to 7 years old and would find an 8 year old to be a big kid.
Although an 8 year old being considered a big kid can be subjective as they are firmly in their middle childhood and are transitioning from early childhood or pre adolescence and are also no longer considered a toddler.
When I was 8 I considered myself a big kid and I consider my 8 year old son a big kid as well.
8 years old is not a youth and instead an 8 year old is considered a child.
A youth is defined as being between the ages of 15 to 24 years in some states.
However many people only find someone a youth from 15 to 18.
I personally find that a child is someone from 4 to 13.
Once the age starts mentioning teen in it I would say that the person is not a teen and no longer a child but the teen is also considered a youth.
However for statistical purposes the United Nations defines "youth" as those that are between the ages of 15 to 24 years of age.
Children are often considered to be those under the age of 14 and a toddler is often from 1 to 3 years old.
And tweens are kids between the ages of 8 to 12 years old because they are in between being children and teenagers.
Middle childhoods is when a child is 6 to 8 years old.
And adolescence is when a child is between the ages of 10 years old to 19 years old.
Puberty also often starts as early as age 8 for girls and puberty often starts as early as age 9 for boys.
At age 7 to 8 some kids feel torn between the little kid and big worlds.