Should children under 18 convicted of crimes be subject to less solitary confinement?
They shouldn't be subject to any.
Those who are still developing both physically and mentally should never be placed in solitary confinement.
So what do you do if you have a 16 y/o with anger problems who has almost adult strength and gets extremely aggressive when caged up with a stranger?
Cage them up by themselves...
"Solitary confinement" does not refer to being in a normal cell by yourself..
Does it really matter that much whether you're alone in a double occupancy cell or a single one? The images I can google for both don't seem very different.
They are smaller cells in which a person spends 24 hours a day in. Regular prisoners are allowed out of their cells at least a few hours a day to get exercise. A lack of exercise is extremely detrimental to a developing child.
In the US, it's used as a punishment amongst prisoners. Those who are in solitary confinement are regularly denied medical and/or psychological treatment when requested.
It should not be allowed as punishment.
Solitary should, no matter the age, only be enforced if the inmate is a danger to others or at risk to be harmed by other inmates.