Sperling's Masters research experiment about propaganda (how far can a naive subject's judgment be influenced by a stooge) is described in Asch's 1952 book Social Psychology.
[5] Sperling's Ph.D. research involved measurements of spectral sensitivity of human subjects and set the stage for his lifelong goal of modeling how the retina processes colour through opponent interactions.
During his tenure there from 1948 to 1959, he worked with Commander Dean Farnsworth detecting and classifying the characteristics of different types of colour blindness.
He investigated intense light effects on rhesus monkeys that involved experimental color-blinding, spectral sensitivity measurements and ultrastructure of the retina.
Combining spectral sensitivity data with electroretinography that measures electrical activity of different retinal cell types, he was by the end of his career convinced that all colour processing is completed in the retina.