Twin kids in Madagascar, are in very bad circumstances, and their parents are expected to obey tribal leadership about twins.
The Antambahoaka tribe, (#14) in southern Madagascar, believe that twins are evil, bad luck, and can destroy families.
So their culture demands that twins be disposed of.
Historically, they are abandoned in the desert to die.
Look it up.
This is an example of how a society can damage kids in a family.
Eric J. Rose