Otto Heller with his stimulus series of apples
150 x 100 x 2.5 cm (h x w x d)

Otto Heller was intensively involved in frame of reference research and investigated it with various stimulus series. These included weights, cigarette of different length and also apples of different size.

More from The Center for the History of Psychology presents:

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)
The Center for the History of Psychology presents:
Lothar Schmidt-Atzert
150 x 100 x 2.5 cm (h x w x d)
The Center for the History of Psychology presents:
Janke & Wittkowski
150 x 100 cm (h x w)
The Center for the History of Psychology presents:
Gustav Lienert (1920-2001) and Wilhelm Janke (1935-2012)
150 x 100 x 2.5 cm (h x w x d)
The Center for the History of Psychology presents: