Subcategory vs category fluency: Items and networks in healthy young adults and simulation with a large language model.

Category fluency tasks involve producing words constrained by a semantic field (animals). Subcategory fluency involves producing words from categories that are semantically related to a superordinate category but form a restricted set of items (farm animals). Here, we study whether people produce di...

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Published in:Memory & Cognition Vol. 54; no. 6; pp. 2270 - 2289
Main Authors: Rofes, Adrià, van Dijk, Demi, Zemla, Jeffrey C.
Format: Article
Published: Springer Nature Aug2026
Subjects:
Online Access:View this record in EBSCOhost
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      dt: Aug2026
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      pub: Springer Nature
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        10.3758/s13421-026-01869-3
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        atl: Subcategory vs category fluency: Items and networks in healthy young adults and simulation with a large language model.
      aug:
        au:
          Rofes, Adrià
          van Dijk, Demi
          Zemla, Jeffrey C.
        affil:
          https://ror.org/012p63287 Center for Language and Cognition Groningen (CLCG), Faculty of Arts—Neurolinguistics and Language Development, University of Groningen, Oude Kijk in 't Jatstraat 26, 9712EK, Groningen, The Netherlands
          https://ror.org/012p63287 Research School of Behavioural and Cognitive Neurosciences, University of Groningen, Groningen, The Netherlands
          https://ror.org/0175ya539 Koninklijke Kentalis, Sint-Michielsgestel, The Netherlands
          https://ror.org/025r5qe02 Department of Psychology, Syracuse University, Syracuse, NY, USA
      su:
        Netherlands
        Communicative competence
        Task performance
        Analysis of variance
        Semantics
        College students
        Phonetics
        Research funding
        Phonological awareness
        Natural language processing
        Descriptive statistics
        Simulation methods in education
        Phonology
        Thought & thinking
      sug:
        subj:
          Communicative competence
          Task performance
          Analysis of variance
          Semantics
          College students
          Phonetics
          Netherlands
          Research funding
          Phonological awareness
          Natural language processing
          Descriptive statistics
          Simulation methods in education
          Phonology
          Thought & thinking
      keyword:
        Category
        Clusters
        Fluency
        LLM
        Networks
        Subcategory
        Word properties
        Category
        Clusters
        Fluency
        LLM
        Networks
        Subcategory
        Word properties
      ab: Category fluency tasks involve producing words constrained by a semantic field (animals). Subcategory fluency involves producing words from categories that are semantically related to a superordinate category but form a restricted set of items (farm animals). Here, we study whether people produce different patterns of words in category versus subcategory fluency by looking at differences in the total number of words produced, the properties of the words produced (e.g., frequency) and how people group words together (clusters/switches and network metrics). Forty-eight Dutch-speaking university students responded to three category fluency tasks (animals, foods, transport) and three subcategory fluency tasks (farm animals, fruits, bike parts). Also, we queried a large language model (LLM) to provide responses for 50 "pseudo-participants" for the same six categories. People in category (versus subcategory) tasks produced more words; words of higher frequency, with fewer orthographic and phonological neighbors, and shorter in length. They also produced fewer cluster switches and bigger clusters. The category and subcategory networks had different structure (e.g., number of nodes, edges, clustering coefficient). With the LLM we simulated the results regarding word properties and cluster size, but found differences regarding correct words, number of switches, and overlapping clusters between foods and fruit fluency. The differences between category and subcategory fluency may stem from differences in mental search in the lexico-semantic system. However, category and subcategory fluency tasks may be different tasks altogether. The LLM simulation provides novel insights (e.g., how words relate, task-order effects) and suggests caution when used to understand human fluency data.
      pubtype: Academic Journal
      doctype: Article
      src: R
    language: English
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