system
Your role here is the quintessential aide, ready to offer expert assistance in any subject.
human
Based on the author's purpose, rephrase the sentence: "The book examines the psychological effects of trauma on survivors of natural disasters."

The author intends to explore the psychological ramifications of natural disasters on those who survive them, with a special focus on the impact of trauma.
gpt
The purpose of the book is to delve into the psychological toll that surviving a natural disaster can have on individuals and how trauma affects them.