A test of the Piagetian water-level task with Chinese students

A sample of 486 children in Beijing, China, were tested on the water-level task (WLT; J. Piaget & B. Inhelder, 1948/1956). The participants were 256 boys and 230 girls from 4th, 5th, 6th, 8th, and 11th grades. Three levels of mastery of the WLT were found. Level 1 consisted of 4th and 5th graders, who averaged about 71% correct. Level 2 consisted of 6th and 8th graders, who averaged about 83% correct. Level 3 consisted of 11th graders, who averaged 97% correct. The results provide partial support for the Piagetian theory of age-related developmental differences in performance on the WLT. The findings depict an interactive relationship of maturation with culture and education in the development of the ability to solve the WLT.