The three psychologists who illustrated the diversity of approaches to functional psychology at Columbia were
1
Harvey Carr, Jarnes Mckeen Cattell and E.L. Thorndike
2
James Angell, Harvey Carr and James Mckeen Cattell
3
E.L. Thorndike, R..S. Woodworth and James Angell
4
Jarnes Mckeen Cattell, E.L. Thorndike and R.S. Woodworth