The block design (BD) test is a subtest from the Wechsler corpus of intelligence tests that requires the examinee to use three-dimensional blocks to construct a model from a two-dimensional stimulus card. Blocks consist of sides that are all white, all red, or diagonally half red and white. Performance is timed. Although bonus points are awarded for speed, the score is either all or none, that is, a score is awarded only if the model is correctly produced within the prescribed time limit.
Hutt (1925) notes that the first documented use of block construction as a psychological test was by Francis N. Maxfield, working at the University of Pennsylvania Psychology Laboratory and Clinic, who devised a “color cube” test to study “imageability in children.” The procedures devised by Maxfield were also used by Clara Town (1921, cited in Hutt 1925). Both of these researchers were interested in studying analytic problem-solving strategies...
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