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A Cognitive Paradigm to Investigate Interference in Working Memory by Distractions and Interruptions
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Age-differences in the temporal properties of proactive interference in working memory.

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Summary
This summary is machine-generated.

Older adults struggle more with proactive interference (PI) due to impaired memory suppression. Age differences in PI temporal boundaries highlight aging-related control deficits.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience of Aging

Background:

  • Proactive interference (PI) is linked to difficulty suppressing irrelevant information.
  • This memory deficit may be exacerbated in older adults.

Purpose of the Study:

  • To investigate age differences in proactive interference.
  • To examine the temporal boundaries of PI in younger and older adults.

Main Methods:

  • A verbal 2-back working memory task was used.
  • Lure distances were manipulated to assess PI effects.

Main Results:

  • Both age groups showed PI for proximal lures (3- and 4-back), with greater effects in older adults.
  • Younger adults showed reduced PI with increased lure distance, but older adults were affected by PI across all tested distances.
  • Older adults improved only in accuracy, while younger adults improved in both reaction time and accuracy as lure distance increased.

Conclusions:

  • Older adults are less effective at resolving interference from both proximal and distant lures.
  • Age-related differences in PI temporal dynamics suggest impaired interference control in aging.
  • Younger adults can overcome PI effects with sufficient temporal separation.