All murder cases are not the same and they are treated differently by law.
There's planned murder & unplanned murder (unintended death).

The brain of a teenage boy or girl is not yet developed into an adult brain. I
think they call this section of the brain the frontal cortex..is the last part
of the brain to reach maturity.

http://www.usaweekend.com/03_issues/...teenbrain.html