<P> The principal laws of association are contiguity, repetition, attention, pleasure - pain, and similarity . The basic laws were formulated by Aristotle in approximately 300 B.C. and by John Locke in the seventeenth century . Both philosophers taught that the mind at birth is a blank slate and that all knowledge has to be acquired by learning . The laws they taught still make up the backbone of modern learning theory . </P> <P> David Hartley taught that contiguity is the main law of association, and, believing that it is the primary source, Hartley ignored David Hume's law of resemblance (Warren, 1921). </P>

Who proposed the laws of association to explain learning
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