Emerging Human-like Strategies for Semantic Memory Foraging in Large Language Models

• URL: http://arxiv.org/abs/2603.01822v1
• Date: Mon, 02 Mar 2026 12:55:51 GMT
• Title: Emerging Human-like Strategies for Semantic Memory Foraging in Large Language Models
• Authors: Eric Lacosse, Mariana Duarte, Peter M. Todd, Daniel C. McNamee,
• Abstract summary: Both humans and Large Language Models (LLMs) store a vast repository of semantic memories.<n>In humans, efficient and strategic access to this memory store is a critical foundation for a variety of cognitive functions.
• Score: 0.8749675983608171
• License: http://creativecommons.org/licenses/by-nc-sa/4.0/
• Abstract: Both humans and Large Language Models (LLMs) store a vast repository of semantic memories. In humans, efficient and strategic access to this memory store is a critical foundation for a variety of cognitive functions. Such access has long been a focus of psychology and the computational mechanisms behind it are now well characterized. Much of this understanding has been gleaned from a widely-used neuropsychological and cognitive science assessment called the Semantic Fluency Task (SFT), which requires the generation of as many semantically constrained concepts as possible. Our goal is to apply mechanistic interpretability techniques to bring greater rigor to the study of semantic memory foraging in LLMs. To this end, we present preliminary results examining SFT as a case study. A central focus is on convergent and divergent patterns of generative memory search, which in humans play complementary strategic roles in efficient memory foraging. We show that these same behavioral signatures, critical to human performance on the SFT, also emerge as identifiable patterns in LLMs across distinct layers. Potentially, this analysis provides new insights into how LLMs may be adapted into closer cognitive alignment with humans, or alternatively, guided toward productive cognitive \emph{disalignment} to enhance complementary strengths in human-AI interaction.

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