Counting on working memory in simple arithmetic when counting is used for problem solving

Area of Science:

• Cognitive Psychology
• Neuroscience
• Working Memory Research

Background:

• Understanding the cognitive processes underlying mathematical problem-solving is crucial.
• Working memory plays a significant role in complex cognitive tasks, including arithmetic.
• Previous research has explored strategy selection in arithmetic, but the role of working memory resources is less clear.

Purpose of the Study:

• To investigate the relationship between working memory resource availability and strategy selection/execution in simple addition verification.
• To determine if working memory limitations affect how individuals choose and perform arithmetic strategies.
• To explore the contribution of working memory to individual differences in retrieval processes.

Main Methods:

• A concurrent-task methodology was employed to manipulate working memory load.
• Participants verified simple addition equations (e.g., 4 + 3 = 8).
• Strategy selection and execution times were recorded under different working memory conditions.

Main Results:

• Undergraduates frequently used non-retrieval strategies, consistent with prior studies.
• Working memory availability generally did not influence strategy selection.
• Disrupting central executive and phonological working memory affected strategy execution, specifically with the min counting strategy.

Conclusions:

• Working memory resource availability does not appear to be a primary factor in individual differences in strategy selection for simple addition.
• Working memory limitations can impact the execution of specific arithmetic strategies, like min counting.
• The findings suggest that working memory does not explain variations in the speed of executing retrieval processes in arithmetic.