According to the author, for what is the colony being used in the novel, Martian Time-Slip?

In context, Mars is being exploited in the worst way by land speculators and is being used as a dumping ground for one of Earth's most ominous and frightening problems: increased mental illness, manifesting itself as schizophrenia. But schizophrenia has increased on Mars as well, especially among the children of the colonists.