A university psychology department received a large donation from a textbook company after agreeing to use one of the company' s books for a large introductory course  The department chair admitted that the department would not have received the donation if it used another company' s textbook, but insisted that the book was chosen solely for academic reasons
As proof, she noted that the department' s textbook committee had given that textbook its highest rating
The members of the textbook committee were favorably influenced toward the textbook by the prospect of their department receiving a large donation.