Lashley jumping stand

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A device used to study visual discrimination in rats. It comprises a platform on which the rat is placed and two vertical cards, each containing a visual stimulus, towards which the rat jumps. If the rat chooses the right card, then a door swings open and the rat lands in a chamber and receives a food reward; if it chooses wrongly, it bumps against a fixed door and falls into a net below. [Named after the US physiological psychologist Karl Spencer Lashley (1890–1958) who invented it]

Subjects: Psychology.

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