In the present research, we provide empirical evidence for the process of symbolic integration of number associations, focusing on the development of simple addition (e.g., 5 + 3 = 8), subtraction (e.g., 5 - 3 = 2), and multiplication (e.g., 5 × 3 = 15). Canadian children were assessed twice, in Grade 2 and Grade 3 (N = 244; 55% girls). All…

A Vygotskian approach to assessment is proposed by invoking the distinction between the development of lower and higher psychological functions. Higher psychological functions are specifically human and develop with the use of cultural tools via mediation. Accordingly, a distinction is made between tests that are based on association, which have…