Here's what I remember about the book:
- It was published in the 1980's as a mass market paperback.
- The cover features people in white jumpsuits.
- One of the telepathic characters is a professional/olympic? swimmer. The authorities trick her into betraying herself by imagining that they are pounding on her door. When she responds, they know she is a telepath.
- Another character is a young orphan boy with a habit of hiding food for later.
Does anyone remember the title/author of this novel?