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  • (cur | prev) 22:03, April 21, 2010Dr Joe Kiff (Talk | contribs)‎ . . (199 bytes) (+199)‎ . . (Created page with '{{CogPsy}} '''George P. Horton''' was an American psychologist who worked with Ray Guthrie, using puzzle boxes in order to develop the laters learning theories. [[Category:Ame…')

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