Psychological Test, Vigotsky Concept Formation Blocks

Psychological Test, Vigotsky Concept Formation Blocks

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This test of concept formation includes twenty-two blocks of various colors (blue, white, yellow, red, and green) and shapes (square, triangle, circle, semicircle, hexagon, cylinder, and trapezoid). Five blocks have LAG written on them, five MUR, six BLK and six CEV. When the marked sides are placed flat, the blocks marked MUR are all 2 cm. high and have relatively small width. The blocks marked LAG have the same height and a larger width. The blocks marked CEV are all.8 cm. high with a relatively small width. The blocks marked BLK also are all.8 cm. high and have a larger width. The blocks fit in a compact wooden box stained brown that has a top that slides off.
A paper sticker on the lid of the box reads: Vigotsky (/) test. A sticker on the side of the box is stamped: SHAKOW. It also has written in pen: Ach Sakhaw. A pencil mark on the back of the lid reads: Mr. Shaiko (/) Don Bishop.
This test is associated with the names of Russian psychologiests Lev Vygotsky (1896-1934) and his colleague Leonid Solomonovich Sakharov (1900-1928). According to some sources, Vygotsky’s test had thirty-six pieces, a number reduced to twenty-two by Boris Semeonoff in 1937.
Not all psychologists admired the test. For example, Grace Helen Kent wrote: “The Vigotsky test may keep the subject working many minutes on false leads, and the chances are against a child’s finding the correct lead at all.”
Website, accessed January 24, 2020.
Website, accessed January 24, 2020.
G.H. Kent, Mental Tests in Clinics for Children, New York: D. Van Nostrand, 1950, p. 119.
Currently not on view
Object Name
Psychological Test
date made
ca 1940
Physical Description
wood (overall material)
overall: 6 cm x 11.5 cm x 9 cm; 2 3/8 in x 4 17/32 in x 3 17/32 in
ID Number
catalog number
accession number
Credit Line
Gift of David Shakow
Psychological Tests
See more items in
Medicine and Science: Mathematics
Data Source
National Museum of American History
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