This psychologist and Joseph Kruskal developed the technique of non-metric multidimensional scaling to help map subjective data. This psychologist used the example of a bird that eats one earthworm and is then presented with a slightly different earthworm to explain the notion of “psychological space” used in his universal law of generalization. Optical illusions named for this man include a figure-ground illusion involving elephant legs and an illusion involving two identical parallelograms that look like the tops of different-sized tables. The film Dunkirk prominently features another illusion named for this man, which is a superposition of sine waves that is often compared to a barber pole because it appears to continually ascend or descend in pitch without actually getting higher or lower. For 10 points, name this American cognitive scientist who lends his name to those “tones.” ■END■
ANSWER: Roger Shepard [or Roger Newland Shepard; accept Shepard tones; accept Shepard tables; accept Shepard elephant]
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