Resumen de The contributions of working memory and executive functioning to problem representation and solution generation in algebraic word problems
Kerry Lee, Ee Lynn Ng, Swee Fong Ng
Solving algebraic word problems involves multiple cognitive phases. The authors used a multi task approach to examine the extent to which working memory and executive functioning are associated with generating problem models and producing solutions. They tested 255 II-year-olds on working memory (Counting Recall, Letter Memory, and Keep Track), ability to inhibit inappropriate responses (inhibition: numeric Stroop, Stop Signal), mental flexibility (switching: Number-Letter and Plus-Minus), English literacy, and algebraic problem-solving skills (problem representation, solution generation, and other subcomponents). Working memory explained about a quarter of the variance in both representation and solution formation. Literacy explained an additional 20% of the variance in representation formation. Ability to discern quantitative relationships explained an additional 10%. The findings go beyond a demonstration of an association between working memory and problem-solving accuracy. They show that success in word problems is particularly reliant on ability to decode and assign mathematical operators to quantitative relationships, 2 phases of problem solving that also draw heavily on working memory resources
