Colin Cherry
Edward Colin Cherry (23 June 1914 – 23 November 1979) was a British cognitive scientist whose main contributions were in focused auditory attention, specifically the cocktail party problem regarding the capacity to follow one conversation while many other conversations are going on in a noisy room. Cherry used shadowing tasks to study this problem, which involve playing two different auditory messages to a participant's left and right ears and instructing them to attend to only one.