Aging and List-Wide Modulations of Strategy Execution:A Study in Arithmetic

Area of Science:

• Cognitive Psychology
• Neuroscience
• Human Development

Background:

• Understanding cognitive strategy execution and its age-related changes is crucial.
• Poorer-strategy effects and their sequential modulations are key areas of investigation.
• The influence of problem set composition on these effects requires further study.

Purpose of the Study:

• To investigate how the proportion of poorer-strategy problems affects strategy execution.
• To examine age-related differences in poorer-strategy effects and sequential modulations.
• To explore the underlying cognitive control mechanisms.

Main Methods:

• A computational estimation task involving two-digit multiplication was used.
• Problem sets varied in the proportion of poorer-strategy problems (75%, 50%, 25%).
• Age-related differences in performance and strategy modulation were analyzed.

Main Results:

• The proportion of poorer-strategy problems significantly influenced sequential modulations of these effects.
• Sequential modulations were larger when poorer-strategy problem proportions were equal versus unequal.
• Older adults showed greater benefits from lower proportions of poorer-strategy problems than younger adults.

Conclusions:

• Findings highlight the role of cognitive control in strategy execution modulation.
• Results demonstrate how these cognitive processes adapt across the lifespan.
• The study provides insights into age-related differences in cognitive flexibility and control.