ABSTRACT
In the 1990s, a very prominent model in cognitive psychology hypothesized that all numerical quantity information would be transformed into a single and central representation before the cognitive system could make use of it. The analogue magnitude code represents numerical quantity information and is part of a preverbal system for arithmetic reasoning. Psychologists have transferred the concepts to the internal structure of semantic knowledge, such as cardinal magnitude knowledge. The assumption of a mental number line (MNL) also implies an association of numerical magnitudes with space. The assumption of a direct mapping between the position of a number on the MNL and response side has been challenged by the dual-route model and the working memory account. Both the MNL account and the dual-route model assume that the association between numbers and space coordinates is an intrinsic property of the long-term memory representation of numbers.
