The answer is]. The “brain trust” refers to a group of smart advisers, that assisted Roosevelt in guiding the nation forward. This was term coined by James Kirean, a reporter of the NY Times. These people were actually academic advisers that FDR trusted to help him with his presidential campaign in 1932. The advisers were three Columbia University Professors named: Raymond Moley, Rexford Guy Tugwell, and Adolph A. Berle Jr.