Morphological vs. phonological explanations for affix errors in agrammatism

Szupica-Pyrzanowska, Małgorzata; Obler, Loraine K.; Martohardjono, Gita

doi:10.1080/02687038.2016.1225273

Cited by 5 publications

(5 citation statements)

References 38 publications

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“…In another study, PSA-G produced affixed verbs in 75% of their responses, showing no specific difficulty with affixation per se (Faroqi-Shah & Thompson, 2004). The meta-analysis and several other studies highlighted the confound between phonological and morphological complexity, not only because morphologically complex stimuli tend to be phonologically complex, but also because of the co-occurrence of both types of deficits in PSA-G (Bird et al, 2003;Braber et al, 2005;Faroqi-Shah & Thompson, 2010;Kohn & Melvold, 2000;Obler et al, 1999;Szupica-Pyrzanowska et al, 2017).…”

Section: Functional Morphologymentioning

confidence: 87%

“…For example, to address the fact that verb retrieval failures could confound the accuracy of producing verb inflections, Faroqi-Shah & analysis of the production of verb inflections only included verbs that were correctly named by each participant in a separate confrontation naming task. At minimum, a study should document screening of intuitive variables based on the experimental task, such as hearing loss and short-term memory for auditory comprehension and AoS for verbal production (for example, see Szupica-Pyrzanowska et al, 2017).…”

Section: Empirical Rigor In Psa-g Researchmentioning

confidence: 99%

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

Faroqi‐Shah

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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Section: Functional Morphologymentioning

confidence: 87%

Section: Empirical Rigor In Psa-g Researchmentioning

confidence: 99%

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

Faroqi‐Shah

2023

Preprint

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show abstract

“…In another study, PSA-G produced affixed verbs in 75% of their responses, showing no specific difficulty with affixation per se (Faroqi-Shah and . The meta-analysis and several other studies highlighted the confound between phonological and morphological complexity, not only because morphologically complex stimuli tend to be phonologically complex, but also because of the co-occurrence of both types of deficits in PSA-G (Obler et al, 1999;Kohn and Melvold, 2000;Bird et al, 2003;Braber et al, 2005;Faroqi-Shah et al, 2010;Szupica-Pyrzanowska et al, 2017).…”

Section: Functional Morphologymentioning

confidence: 92%

“…For example, to address the fact that verb retrieval failures could confound the accuracy of producing verb inflections, Faroqi-Shah and analysis of the production of verb inflections only included verbs that were correctly named by each participant in a separate confrontation naming task. At minimum, a study should document screening of intuitive variables based on the experimental task, such as hearing loss and short-term memory for auditory comprehension and apraxia of speech (AoS) for verbal production (for example, see Szupica-Pyrzanowska et al, 2017).…”

Section: Mediating Moderating and Confounding Factorsmentioning

confidence: 99%

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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“…While many studies have focused on distinguishing between morphological and phonological contributions to morphological impairment (e.g. Badecker, 1997; Bird, Lambon Ralph, Seidenberg, McClelland, & Patterson, 2003; Faroqi-Shah, 2008; Faroqi-Shah & Thompson, 2004; Miceli, Capasso, & Caramazza, 2004; Szupica-Pyrzanowska, Obler, & Martohardjono, 2017), there is also evidence that morphological and phonological levels of processing interact with and influence one another. There have been reports of patients who demonstrate an increase in phonological errors in morphologically complex words compared to monomorphemic words (Kohn & Melvold, 2000), as well as evidence that phonological factors (e.g.…”

Section: Introductionmentioning

confidence: 99%

The impact of morphophonological patterns on verb production: evidence from acquired morphological impairment

Rimikis

Buchwald

2018

Clinical Linguistics & Phonetics

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Although much of the research on morphology and aphasia has focused specifically on the distinction between regular and irregular verb production, individuals with aphasia often present with differences in performance within these categories. While these within-category differences are relatively understudied, they have the potential to inform our understanding of the morphological processing system and treatment protocols for morphological impairment. The present study examines how morphophonological patterns in English impact past-tense production within the categories of regular and irregular verbs based on errors of an individual with acquired morphological impairment. Acquired morphological impairment was demonstrated by performance on two reading tasks. First, the individual produced more final consonant deletion errors in morphologically complex words (prays→[pre]) compared to homophones (praise→[pre]). Second, morphological deletion errors were found to occur at comparable rates for inflected regular verbs (sinned→sin) and inflected irregular verbs (won→win), whereas the analogous error (e.g. ton→tin) never occurred on the monomorphemic pairs. In order to examine differences within each category, we used a past-tense elicitation task designed to analyse the effect of differences in morphophonological pattern frequency on accuracy and error patterns in production. We found production of both regular and irregular verbs was affected by the extent to which different morphophonological patterns are supported in the language (i.e. the number of phonologically similar words within the lexicon which take the same inflectional change). These results provide evidence that morphophonological patterns are encoded in a way that impact morphological production, a finding which has both clinical and theoretical implications.

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Morphological vs. phonological explanations for affix errors in agrammatism

Cited by 5 publications

References 38 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

The impact of morphophonological patterns on verb production: evidence from acquired morphological impairment

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