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Open research questions in Categorization, perception, and language

249 gap statements mined from Categorization, perception, and language papers in our 7.9M-paper local library, which holds 1,971 papers on the topic — drawn mostly from each paper's own stated research gap, future-work, challenge and limitation notes, and its abstract. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one.

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What the literature leaves open

  • The need to mitigate the impact of highly frequent words in the lambda values.

    Exploring Semanticity for Content and Function Word Distinction in Catalan · 2024 · DOI

  • The lack of familiarity with the Valencian language and an over-reliance on guidelines set by textbooks and official prescriptive grammars. The absence of empirical studies addressing the description of Valencian linguistic varieties and the impact of schooling. The need to explore the social variables that help explain the usage of DOM in Valencian.

    The Differential Object Marker in Valencian: Another Failure of Prescriptivism · 2024 · DOI

  • The paper identifies the challenge of limited sample size, especially in the case of deaf participants. It highlights the difficulty of conducting experiments with deaf signers. The study notes the challenge of avoiding possible confusion and preventing participants from guessing the real purpose of the experiment.

    Spatial Cognition, Modality and Language Emergence: Cognitive Representation of Space in Yucatec Maya Sign Language (Mexico) · 2024 · DOI

  • Cues that share a category label with the target can capture attention even when their hue differs, yet it remains unclear whether this categorical guidance extends to fine-grained, confusable colours near category boundaries.

    Colour categories shape attention at the blue–green boundary · 2025 · DOI

  • This study approaches how language influences memory of event outcomes from the under-explored perspective of the verb’s “fulfilment type”, a property formulated in Talmy’s event integration theory.

    Inferences about event outcomes influence text-based memory of event outcomes · 2024 · DOI

  • However, it remains unclear whether language affects perception online or through long‐term changes to mental representations in memory.

    Transient and Long‐Term Linguistic Influences on Visual Perception: Shifting Brain Dynamics With Memory Consolidation · 2024 · DOI

  • The 'contextual mediator' (C) remains conceptually broad and aggregates multiple dimensions without fully decomposing their internal cognitive architecture. The study must balance the need for analytical consistency with the need to preserve contextual variability.

    Meaning as Distribution: A U–M–C Model of Contextual Interpretation in Bangla · 2026 · DOI

  • This research reveals the properties of an understudied version of polar questions, showing that a polar question can be expressed by a polar noun in one language and by an explicit coordinate construction in another language. Moreover, it explores the possible contextual categorization of the understudied types of non-root categoryless expressions: categoryless coordination and modification complexes.

    Contextually categorizing eventive polar questions · 2026 · DOI

  • The lack of understanding of the shared functions of applicatives and serial verb constructions in Central Salish languages. The need to explore the link between prepositions and applicatives in the broader linguistic literature.

    Making do without prepositions: Exploring serial verb and applicative shared functions in Central Salish · 2026 · DOI

  • The 'aftermath of N' construction has not been thoroughly investigated. The construction's semantic preference and prosody have not been fully understood.

    Semantic preference and prosody of the ‘aftermath of N’ construction: A corpus-based investigation · 2026 · DOI

  • The research requires a deep understanding of cognitive linguistics and phraseology. The study needs to account for cultural and linguistic differences between Czech and Polish.

    Obraz lva v češtině a polštině – komparativní studie · 2026 · DOI

  • Future research could explore the linguistic picture of other animals in Czech and Polish. The study suggests further analysis of phraseological units in other languages.

    Obraz lva v češtině a polštině – komparativní studie · 2026 · DOI

  • Further study is needed to analyze the figurative uses of color terms in other languages. Further study is needed to examine the relationship between color terms and emotions. Further study is needed to develop language resources that take into account the figurative uses of color terms.

    Emergence of figurative usages of color terms in Thai · 2026 · DOI

  • The lack of a comprehensive analysis of the emergence of figurative uses of color terms in Thai. The need for a study that analyzes literary works and the Thai National Corpus to identify the emergence of figurative uses of color terms.

    Emergence of figurative usages of color terms in Thai · 2026 · DOI

  • The study notes that prior work has mixed evidence about whether people form abstract representations that can be analogized across modalities.

    Learners do not readily form abstract category representations across sensory modalities. · 2026 · DOI

  • Investigate overgeneralization in other linguistic contexts. Examine the role of other factors, such as cognitive development and processing capacity, in shaping overgeneralization. Explore the effectiveness of different instructional methods in reducing overgeneralization.

    When rules stick too well: overgeneralization of physical and psychological noun phrase attachment in L2 learning of Japanese sound-symbolic words · 2026 · DOI

  • Prior research has shown that L2 learners encounter difficulties in acquiring Japanese sound-symbolic words, but the study aims to explore this issue further.

    When rules stick too well: overgeneralization of physical and psychological noun phrase attachment in L2 learning of Japanese sound-symbolic words · 2026 · DOI

  • Very few studies have related the fields of linguistic relativity and 4E cognition.

    Linguistic relativity from an enactive perspective: the entanglement of language and cognition · 2024 · DOI

  • The dataset remains exploratory in scale and was designed primarily for theoretical operationalization rather than large-scale statistical generalization. Interpretive weighting inevitably involves annotation-based judgment. The 'contextual mediator' (C) remains conceptually broad and aggregates multiple dimensions without fully decomposing their internal cognitive architecture.

    Meaning as Distribution: A U–M–C Model of Contextual Interpretation in Bangla · 2026 · DOI

  • The mechanisms underlying the difference in emotional expression in L1 and L2 are poorly understood.

    What underlies differences in emotional expression in L1 and L2? Examining the lexical properties of narratives · 2026 · DOI

  • To further explore the shared functions of applicatives and serial verb constructions in Central Salish languages. To examine the semantics of verbs in relation to SVCs. To investigate the areal feature of verb serialization in coastal languages.

    Making do without prepositions: Exploring serial verb and applicative shared functions in Central Salish · 2026 · DOI

  • It has been established that sound and smell emission vocabulary forms a distinct semantic class unified by a common conceptual foundation – namely, the modeling of a perceptual interaction situation between its key participants. The emission situation is structured according to a multidimensional concept comprising internal and external scopes.

    Semantic Class of Emission Situation Vocabulary: a Contrastive-Typological Perspective · 2026 · DOI

  • Further research could investigate the impact of DOM on RC processing in other languages, - Further research could examine the effects of bilingualism on DOM processing in more…

    Differential Object Marking in Structurally Complex Contexts in Spanish: Evidence from Bilingual and Monolingual Processing · 2024 · DOI

  • The study identifies a gap in the understanding of how DOM affects the processing of relative clauses in Spanish. It also identifies a gap in the understanding of how bilingualism influences the processing of DOM in Spanish. The study aims to fill this gap by investigating the impact of DOM on the processing distinctions between subject and object RCs in Spanish monolingual and bilingual speakers.

    Differential Object Marking in Structurally Complex Contexts in Spanish: Evidence from Bilingual and Monolingual Processing · 2024 · DOI

  • Further study of the construction's semantic preference and prosody. Analysis of the construction in different linguistic contexts. Investigation of the construction's use in language teaching and learning.

    Semantic preference and prosody of the ‘aftermath of N’ construction: A corpus-based investigation · 2026 · DOI

Most-cited papers in Categorization, perception, and language

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Open questions raised by papers listed on this page include: (1) The lack of understanding of the shared functions of applicatives and serial verb constructions in Central Salish languages (“Making do without prepositions: Exploring serial verb and applicative shared…”, 2026); (2) The 'aftermath of N' construction has not been thoroughly investigated (“Semantic preference and prosody of the ‘aftermath of N’ construction: A…”, 2026); (3) Future research could explore the linguistic picture of other animals in Czech and Polish (“Obraz lva v češtině a polštině – komparativní studie”, 2026); (4) Further study is needed to analyze the figurative uses of color terms in other languages (“Emergence of figurative usages of color terms in Thai”, 2026); (5) Cues that share a category label with the target can capture attention even when their hue differs, yet it remains unclear whether this categorical guidance extends to fine-grained, confusable colours near category boundaries (“Colour categories shape attention at the blue–green boundary”, 2025). 249 gap statements have been mined from Categorization, perception, and language papers in our 7.9M-paper local library, which holds 1,971 papers on the topic; the gaps come from whichever of those papers state one. They are mostly the research gaps the authors state and the papers' abstracts, plus future-work, limitations and challenges passages. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one, so you can read the original claim in context.

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