This case study reports on the progress of Navon, a 13-year-old boy with prelingual deafness, over a 3-month period following exposure to Logo, a computer programming language that visualizes specific programming commands by means of a virtual drawing tool called the Turtle. Despite an almost complete lack of skills in spoken and sign language,…

It was hypothesized that the cognitive structures which underlie performance on class-inclusion tasks also underlie reading comprehension of the stated or inferred main idea of a paragraph, and that performance on three-dimensional class-inclusion tasks developmentally precedes performance on two-dimensional class-inclusion tasks. Ten kindergarten…

The Science Reasoning Level Test (SRLT) was developed and administered to elementary school students in Poland and the United States, in order to determine whether a multiple choice test based on a Piaget model of the development of thought processes could be used to study the development of scientific reasoning. The relationship between reasoning…