Agrammatism in a usage-based theory of grammatical status: Impaired combinatorics, compensatory prioritization, or both?

Boye, Kasper; Bastiaanse, Roelien; Harder, Peter; Martínez-Ferreiro, Silvia

doi:10.1016/j.jneuroling.2022.101108

“…These investigations align a linguistic theory with a specific symptom dissociation in PSA-G. In a recent example of this approach, Boye and Bastiaanse (2018) and Boye et al (2023) used the contrast between grammatical and lexical functions of different words to show that the former word class is deficient in PSA-G (per the ProGram theory, Harder and Boye, 2011). However, PSA-G's dissociation in these two word classes has been documented for decades and formalized in prior theories such as the closed-class theory of agrammatism (Bradley et al, 1980;Biassou et al, 1997).…”

Section: Extant Theories Of Psa-gmentioning

confidence: 66%

A reconceptualization of sentence production in post-stroke agrammatic aphasia: the Synergistic Processing Bottleneck model

Faroqi-Shah

2023

Front. Lang. Sci.

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The language production deficit in post-stroke agrammatic aphasia (PSA-G) tends to result from lesions to the left inferior frontal gyrus (LIFG) and is characterized by a triad of symptoms: fragmented sentences, errors in functional morphology, and a dearth of verbs. Despite decades of research, the mechanisms underlying production patterns in PSA-G have been difficult to characterize. Two major impediments to progress may have been the view that it is a purely morphosyntactic disorder and the (sometimes overzealous) application of linguistic theory without interceding psycholinguistic evidence. In this paper, empirical evidence is examined to present an integrated portrait of language production in PSA-G and to evaluate the assumption of a syntax-specific syndrome. In light of extant evidence, it is proposed that agrammatic language production results from a combination of morphosyntactic, phonomotor, and processing capacity limitations that cause a cumulative processing bottleneck at the point of articulatory planning. This proposed Synergistic Processing Bottleneck model of PSA-G presents a testable framework for future research. The paper ends with recommendations for future research on PSA-G.

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“…Third, while we expect all PSA to show a reduced processing capacity relative to neurotypical speakers (Caplan, 2012;Hula & McNeil, 2008), processing capacity reductions will be steeper in PSA-G relative to PSA-LS, and will interact with processing load manipulations (e.g., Ivanova & Hallowell, 2014). Further, compared to other PSA, PSA-G will show larger benefits (in planning constituents, verbs and phonomotor details) from manipulations that over-rule processing load, such as priming and usage frequency (Boye et al, 2023;Cho-Reyes et al, 2016;Lee & Thompson, 2011a;Speer & Wilshire, 2013).…”

Section: Summary and Predictions Of The Spbmentioning

confidence: 96%

“…This study is frequently cited as evidence of a selective past tense impairment by Bastiaanse and colleagues (e.g.,Bastiaanse, 2013;Bastiaanse et al, 2011;Boye et al, 2023) although there was no significant difference across tenses (cf. Figure2inFaroqi-Shah & Dickey, 2009).…”

mentioning

confidence: 97%

A reconceptualization of sentence production in post-stroke agrammatic aphasia: the synergistic processing bottleneck model

Faroqi‐Shah

¹

2023

Preprint

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The language production deficit in post-stroke agrammatic aphasia (PSA-G) tends to result from lesions to the left inferior frontal gyrus (LIFG) and is characterized by a triad of symptoms: fragmented sentences, errors in functional morphology, and a dearth of verbs. Despite decades of research, the mechanisms underlying production patterns in PSA-G have been difficult to characterize. Two major impediments to progress may have been the view that it is a purely morphosyntactic disorder and the (sometimes overzealous) application of linguistic theory without interceding psycholinguistic evidence. In this paper, empirical evidence is examined to present an integrated portrait of language production in PSA-G and to evaluate the assumption of a syntax-specific syndrome. In light of extant evidence, it is proposed that agrammatic language production results from a combination of morphosyntactic, phonomotor, and processing capacity limitations that cause a cumulative processing bottleneck at the point of articulatory planning. This proposed Synergistic Processing Bottleneck model of PSA-G presents a testable framework for future research. The paper ends with recommendations for future research on PSA-G.

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“…One example is the occurrence of forms of aphasia where the difference between lexical and grammatical elements is striking in informant profiles. For instance, studies of agrammatic aphasia have repeatedly documented that grammatical word production is more compromised than lexical word production (see Nielsen et al 2019, andMart ınez-Ferreiro et al 2020 for recent studies; and see Boye et al 2023 for a usage-based account), and definitions of agrammatic speech therefore standardly refer to a sparsity of grammatical elements. In order to get to the bottom of the neurocognitive (and patient-related) issues that arise in that context, it is important to be aware of what the distinction between lexical and grammatical features of language consists in.…”

Section: The Discourse Prominence Continuummentioning

confidence: 99%

“…2020 for recent studies; and see Boye et al. 2023 for a usage‐based account), and definitions of agrammatic speech therefore standardly refer to a sparsity of grammatical elements. In order to get to the bottom of the neurocognitive (and patient‐related) issues that arise in that context, it is important to be aware of what the distinction between lexical and grammatical features of language consists in.…”

Section: Implication Iii: the Lexical‐grammatical Continuum Does Not ...mentioning

confidence: 99%

Grammaticalization as Conventionalization of Discursively Secondary Status: Deconstructing the Lexical–Grammatical Continuum

Boye

¹

2023

Trans of the Philol Soc

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Despite intense research on grammaticalization, no satisfactory definition has so far been proposed. Some would argue that it is indeed impossible to come up with a precise definition as grammaticalization is an epiphenomenon. After pointing out problems in existing definitions, this article proposes a new definition of grammaticalization as a distinct kind of change. The definition is based not only on the theory of the lexical–grammatical distinction in Boye & Harder (2012), but also on a rejection of the definition of grammaticalization offered there. The proposal is that grammaticalization is a distinct kind of conventionalization: the conventionalization of discursively secondary status. It is argued that in addition to avoiding problems intrinsic to earlier definitions, this definition captures canonical and non‐canonical cases of grammaticalization, and allows us to be precise about what to include and what not to include under grammaticalization. Finally, three important implications are discussed. (1) Grammaticalization is not a type of overall change, but rather one part of overall changes that simultaneously include other aspects. (2) Grammaticalization involves gain rather than loss. (3) A lexical–grammatical continuum does not exists, but grammaticalization is bound up with other continua, including: a social‐level conventionalization continuum, a splitting continuum and a discourse prominence continuum.

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Agrammatism in a usage-based theory of grammatical status: Impaired combinatorics, compensatory prioritization, or both?

Cited by 6 publications

References 84 publications

A reconceptualization of sentence production in post-stroke agrammatic aphasia: the Synergistic Processing Bottleneck model

A reconceptualization of sentence production in post-stroke agrammatic aphasia: the Synergistic Processing Bottleneck model

A reconceptualization of sentence production in post-stroke agrammatic aphasia: the synergistic processing bottleneck model

Grammaticalization as Conventionalization of Discursively Secondary Status: Deconstructing the Lexical–Grammatical Continuum

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