Adults' age-related differences in strategy perseveration are modulated by response-stimulus intervals and problem...

Area of Science:

• Cognitive Psychology
• Neuroscience of Aging
• Human Factors

Background:

• Aging is associated with increased strategy perseveration, where older adults repeat strategies even when ineffective.
• Understanding factors modulating age-related strategy perseveration is crucial for cognitive aging research.

Purpose of the Study:

• To investigate how response-stimulus intervals and problem characteristics influence age-related differences in strategy perseveration.
• To explore the mechanisms underlying strategy selection and cognitive flexibility across the adult lifespan.

Main Methods:

• Participants (young and older adults) performed a computational estimation task involving two-digit addition problems.
• Response-stimulus intervals (300 ms vs. 1300 ms) and problem difficulty were systematically varied.
• Strategy selection and perseveration patterns were analyzed in relation to age, interval duration, and problem features.

Main Results:

• Strategy perseveration was more frequent with shorter response-stimulus intervals (300 ms) compared to longer intervals (1300 ms).
• Older adults exhibited greater strategy perseveration than younger adults under short intervals, but this difference disappeared with long intervals.
• Age-related increases in strategy perseveration were reduced when problem characteristics facilitated strategy selection.

Conclusions:

• Response-stimulus intervals and problem characteristics significantly modulate age-related differences in strategy perseveration.
• Cognitive flexibility in older adults can be influenced by task demands and temporal constraints.
• Findings contribute to understanding cognitive aging and the mechanisms of strategy selection.