When placing numbers along a number line with endpoints 0 and 1000, children generally space numbers logarithmically until around the age of 7, when they shift to a predominantly linear pattern of responding. This developmental shift of responding on the number placement task has been argued to be indicative of a shift in the format of the…

This paper describes a computer model that simulates the way children develop the reasoning skills of transitive inference and the construction of ordered sets. The computer model begins from general operations, such as setting and removing goals, storing and retrieving information, comparing elements to find matches, reading premises, and giving…

This study focused on the developmental ability of 5, 7, ll, and 19 year olds to use a cognitive strategy to recall a series of eight movements under conditions of randomness, order, or randomness with training to organize. Results are discussed. (Author/MT)