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 …

Siegel & Ryan (1989) reported that children with specific arithmetical learning difficulties
(ALD) were impaired if they had to retain temporary information concurrently with counting …

Canadian university students either of Chinese origin (CC) or non-Asian origin (NAC) and
Chinese university students educated in Asia (AC) solved simple-arithmetic problems in the …

Time–accuracy functions for tasks involving single-digit mental addition and subtraction
were derived in a sample of 18 younger (mean age= 21.7 years) and 16 older adults (mean …

This study tested the hypothesis that children with high working memory capacities solve
single-digit additions by direct retrieval of the answers from long-term memory more often …

More than 40 years ago, Baddeley and Hitch (1974) published an article with a wealth of
experimentation and theorization on working memory, the small amount of information held …

In the arithmetic-verification procedure, subjects are presented with a simple equation (eg,
4× 8= 24) and must decide quickly whether it is true or false. The prevailing model of …

Using cognitive methods to fractionate functionally distinct aspects of short-term memory, a
test battery was designed to tap the AD Baddeley and G. Hitch (1974) model of working …

Previous research has demonstrated that working memory plays an important role in
arithmetic. Different arithmetical strategies rely on working memory to different extents—for …

In an experiment using verification task procedures, 100 subjects responded to simple and
complex problems of addition and multiplication. Identical structural parameters were found …