Generally what happens is they become selfish and single-mindedly focus on keeping themselves alive until they can become a Shriken, even at the expense of the people they know. They become tyrannical in order to cull resources.
"Days!" Marisa said, "days? You can't keep me here for days!"
"I will see what I can do for you, but the rest of the council will likely be slow to decide." Jolanin pointed to the bed, "you can use that."