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A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions

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Cognitive interference and aging: insights from a spatial stimulus-response consistency task.

Onésimo Juncos-Rabadán¹, Arturo X Pereiro, David Facal

¹Department of Developmental and Educational Psychology, University of Santiago de Compostela, Campus Sur, 15782 Santiago de Compostela, Spain. pejuncos@usc.es

Acta Psychologica

|July 3, 2007

Summary

Older adults struggle more with irrelevant information during cognitive tasks. This age-related decline in resisting interference impacts response times, especially in complex scenarios.

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Area of Science:

Cognitive Psychology
Neuroscience
Human Aging Research

Background:

Cognitive control involves managing attention and inhibiting irrelevant information.
Aging can affect cognitive functions, including inhibitory control and processing speed.
Understanding age-related differences in cognitive interference is crucial for daily functioning.

Purpose of the Study:

To investigate how age influences the ability to ignore irrelevant stimulus dimensions in a cognitive task.
To compare the impact of irrelevant information on response times across different adult age groups.
To examine the relationship between processing speed and interference effects in aging.

Main Methods:

A spatial stimulus-response consistency task was administered to 131 adults across four age groups (19-26, 50-59, 60-69, 70-82 years).
Response times were measured, and the influence of an irrelevant stimulus dimension on performance was analyzed.
Processing time was assessed using a single-stimulus, single-response task to control for general processing speed differences.

Main Results:

The influence of irrelevant information on response time was significantly greater in middle-aged and older adults compared to young adults.
This age-related increase in interference persisted even after accounting for differences in processing speed.
An interaction was observed where interference decreased with response time in young adults but increased in the oldest group.

Conclusions:

Older adults exhibit reduced ability to resist interference from irrelevant information in cognitive tasks compared to younger individuals.
Age-related decline in inhibitory control contributes to difficulties in filtering out distracting stimuli.
The findings highlight the importance of considering age-related cognitive changes in the design and interpretation of cognitive tasks.