Correcting the SIMPLE model of free recall

Area of Science:

• Cognitive Psychology
• Computational Neuroscience
• Mathematical Psychology

Background:

• The Scale-Invariant Memory, Perception, and Learning (SIMPLE) model is influential in cognitive modeling.
• It posits scale invariance as a core principle across memory, perception, and learning.
• Previous applications have focused on its theoretical contributions to human memory.

Purpose of the Study:

• To identify and correct a conceptual error in the specification of the SIMPLE model.
• To re-evaluate the model's performance on benchmark free recall data.
• To explore the implications of the corrected model for understanding human memory.

Main Methods:

• Theoretical analysis of the SIMPLE model's specification.
• Correction of a conceptual error in the model's formulation.
• Reapplication of the corrected SIMPLE model to Murdock's (1962) free recall data.

Main Results:

• A previously unreported conceptual error in the SIMPLE model was identified.
• The corrected SIMPLE model yields different predictions for serial position curves.
• The corrected model demonstrates a superior fit to Murdock's (1962) benchmark data.

Conclusions:

• The identified error impacts both the theory and practical application of the SIMPLE model.
• The corrected SIMPLE model provides a more accurate account of free recall.
• The revised model's parameters necessitate a reinterpretation of psychological mechanisms in memory.