A total of 72 participants estimated products of complex multiplications of two-digit operands
(eg, 63× 78), using two strategies that differed in complexity. The simple strategy involved …

This study aims at determining the structure of the representation constructed by adults to
solve multiple-step arithmetic word problems. We show that this structure is isomorphic to …

Two experiments, each with 12 undergraduates, examined simple addition processes in
which single integer problems were presented for true–false verification. The stated sums of …

In 2 experiments, college Ss–practiced extensively on single-digit multiplication and division
problems (eg, ___= 6× 9; 42= ___× 6) and were tested on both practice problems and …

In two experiments, we investigated the role of the phonological loop and the central
executive in the verification of the complete set of one-digit addition (Experiment 1) and …

The relationship between arithmetic function and working memory was examined using a
dual-task paradigm for either phonological or visuo-spatial suppression. Simultaneous …

Three explanations of adults' mental addition performance, a counting-based model, a direct-
access model with a backup counting procedure, and a network retrieval model, were …

Current models of mental arithmetic disagree on whether the same mental representation is
activated by numbers in different forms (single-format assumption). Two experiments …

Our investigations address the role of subsystem-specific working memory resources in
mental arithmetic. The dual-task paradigm was used to present addition and multiplication …

Recent behavioral investigations indicate that the processes underlying mental arithmetic
change systematically with practice from deliberate, conscious calculation to automatic …