Polygraph
15 x 50 x 30 cm (h x w x d)

This two-channel polygraph recorder from the Stoelting company was used at Chair I, among other things, to carry out reaction time experiments with variable amounts of information. Thus, Hick's law could be demonstrated experimentally to the students.

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Joachim Hoffmann
150 x 100 x 2.5 cm (h x w x d)
The Center for the History of Psychology presents:
Otto Heller with his stimulus series of apples
150 x 100 x 2.5 cm (h x w x d)
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Lothar Schmidt-Atzert
150 x 100 x 2.5 cm (h x w x d)
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Janke & Wittkowski
150 x 100 cm (h x w)
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Gustav Lienert (1920-2001) and Wilhelm Janke (1935-2012)
150 x 100 x 2.5 cm (h x w x d)
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