The Experiment

From Author Wars - https://authorwars.com/publications/the-experiment-291237.html

Overview:

Title: The Experiment
Author: Richard Setlowe
Year: 1980
Publisher: Holt, Rinehart and Winston / SFBC
Price: $3.50
Pages: 277
Binding: Hardcover
Type: Novel
Title Reference: The Experiment
Notes: Book club edition.
An alternate selection of the SFBC for October 1980.
Price and date from the SFBC announcement flyer.
Gutter code V18 on page 277 indicates a printing in May 1980, so this was very likely available to other Doubleday book clubs earlier in the year.