Serial order depends on item-dependent and item-independent contexts.

Area of Science:

• Cognitive Psychology
• Memory Research
• Computational Neuroscience

Background:

• The context retrieval and updating (CRU) theory offers a framework for understanding serial order recall.
• Osth and Hurlstone (2022) provided a commentary on the CRU theory, raising specific points for discussion.
• Previous models faced challenges in explaining certain types of recall errors and intrusions.

Purpose of the Study:

• To clarify the relationship between CRU, chaining, and associative theories of memory.
• To correct and refine the CRU theory's ability to predict specific serial recall errors (fill-in vs. in-fill).
• To account for position-specific intrusions (prior-list and between-group) within the CRU framework.

Main Methods:

• Theoretical analysis and clarification of CRU principles.
• Mathematical modeling and simulation to test predictions regarding recall errors.
• Development of a position-coding model integrated with CRU representations.

Main Results:

• CRU theory relies on context similarity, distinct from chaining theories using association.
• A corrected CRU model accurately predicts that fill-in errors are more common than in-fill errors.
• Position-specific intrusions suggest a combination of item-based and position-based coding strategies.

Conclusions:

• CRU theory provides a robust account of serial recall, particularly when distinguishing between item-independent and item-dependent coding.
• The findings support the integration of position coding within CRU for specific trial types.
• Further research should focus on immediate performance metrics to differentiate coding strategies in serial recall.