Before revision: The experiment was replicated by Roach, Aman, Appleton, Bellyea and Lips.
After revision: Experiments Between the 1950s and the early 1960s, the Center conducted and experiment that compared students' knowledge of preliterate language after a lecture, seeing a videotape, hearing an audiotape, or reading printed notes.McLuhan (1964) Understanding Media, ch.31 TelevisionThe experiment was replicated by Roach, Aman, Appleton, Bellyea and Lips.