Proactive interference and practice effects in visuospatial working memory span task performance.

Area of Science:

• Cognitive Psychology
• Neuroscience

Background:

• Proactive interference (PI) is a phenomenon where prior learning interferes with current learning.
• Visuospatial working memory (WM) is crucial for temporarily storing and manipulating visual and spatial information.
• Understanding factors influencing WM recall is vital for cognitive theories and applications.

Purpose of the Study:

• To investigate the impact of proactive interference (PI) on recall in visuospatial working memory (WM).
• To examine the effects of practice on WM recall under varying levels of PI.
• To explore the relationship between WM recall, PI, and fluid intelligence.

Main Methods:

• Participants performed a visuospatial WM span task under high-PI (traditional) and low-PI (with breaks) conditions.
• Trials of varying lengths (2-5 items) were used across three blocks to assess practice effects.
• Correlations between fluid intelligence and WM recall were analyzed in the final block.

Main Results:

• Recall increased across blocks more significantly in the low-PI condition compared to the high-PI condition.
• Reducing PI enhanced overall WM recall performance.
• The correlation between fluid intelligence and WM recall was stronger in the high-PI condition after practice.

Conclusions:

• Proactive interference (PI) is a significant source of variability in visuospatial WM span tasks.
• Reducing PI enhances recall and alters the relationship between WM performance and fluid intelligence.
• PI build-up is a key factor in the connection between WM recall and higher-level cognitive abilities.