Natural number bias on evaluations of the effect of multiplication and division: the role of the type of numbers

Over the last years, there is a growing interest in studying students’ difficulties with rational numbers from a cognitive/developmental perspective, focusing on the role of prior knowledge in students’ understanding of rational numbers. The present study tests the effect of the whole or natural number bias (i.e., the tendency to count on natural number knowledge to interpret information about rational numbers and deal with rational number...