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Proactive interference in aging: A model-based study.

Kim Archambeau1,2, Birte Forstmann3, Leendert Van Maanen3

  • 1Center for Research in Cognition and Neurosciences, ULB Neuroscience Institute, Université Libre de Bruxelles, Brussels, Belgium. karchamb@ulb.ac.be.

Psychonomic Bulletin & Review
|December 5, 2019
PubMed
Summary
This summary is machine-generated.

Older adults show intact proactive interference, challenging previous findings. Diffusion decision modeling revealed similar inhibitory processes despite age-related declines in other cognitive functions.

Keywords:
AgingDiffusion decision modelInhibitionProactive interferenceShort-term memory

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Area of Science:

  • Cognitive psychology
  • Neuroscience of aging
  • Human memory

Background:

  • Proactive interference (PI) occurs when prior learning hinders new information.
  • Traditional analyses suggest older adults are more sensitive to PI.
  • Previous studies often analyzed response times and error rates separately.

Purpose of the Study:

  • To re-examine proactive interference in older adults using a diffusion decision model (DDM).
  • To investigate age-related differences in the underlying cognitive mechanisms of memory performance.
  • To clarify whether inhibitory processes are impaired in aging.

Main Methods:

  • Reanalysis of existing data using the diffusion decision model (DDM).
  • DDM allows for a detailed interpretation of latent processing mechanisms.
  • Comparison of evidence accumulation, encoding time, motor execution, and drift rates between age groups.

Main Results:

  • Older adults required more evidence to respond compared to younger adults.
  • Peripheral processes like encoding and motor execution, and recognition memory, declined with age.
  • Drift rates, indicative of proactive interference, were similar across age groups.

Conclusions:

  • Contrary to prior reports, inhibitory processes related to proactive interference appear intact in older adults.
  • Age-related cognitive decline affects peripheral processing and memory, but not necessarily core interference mechanisms.
  • DDM provides a more nuanced understanding of cognitive aging than traditional measures.