Vigilance test
40 x 80 x 2.5 cm (h x w x d)

More from The Center for the History of Psychology presents:

Gustav Kafka (1883-1953)
150 x 100 x 2.5 cm (h x w x d)
The Center for the History of Psychology presents:
Maria Schorn (1894-1968)
120 x 98 x 2.5 cm (h x w x d)
The Center for the History of Psychology presents:
Albert Holden Abbott (1871-1934) and presumably Max Wertheimer (1880-1943)
120 x 140 x 2.5 cm (h x w x d)
The Center for the History of Psychology presents:
Karl and Milly Marbe in the 1930s
120 x 120 x 2.5 cm (h x w x d)
The Center for the History of Psychology presents:
Carl Jesinghaus (1886-1948)
150 x 100 x 2.5 cm (h x w x d)
The Center for the History of Psychology presents: