Note on the Concept Assessment Kit—Conservation

The Concept Assessment Kit-Conservation (Goldschmid & Bender, 1968) was devcloped to measure Piagetian conservation behavior in children and is composed of six tasks, tach measuring a different type of conservation: two-dimensional space, number, substance, continuous quantity, weight, and discontinuous quantity. Each task has two parts, one of which is termed behavioral, i.e., the child indicates his judgment of equaliry or inequality of the materials, and the other is called explanatory, i.e., the child gives a reason for his judgment. One point is given for each correct response, yielding a maximum possible score of 12 (6 for behavior and 6 for explanation). The materials used for the six tasks include wooden blocks (two-dimensional space), red and white poker chips (number), Play-Doh (substance and weight), water in beakers (continuous quantity), and corn seeds in beakers (discontinuous quantity).