Effects of semantic variables on word production in aphasia

Lampe, Leonie F.; Hameau, Solène; Fieder, Nora; Nickels, Lyndsey

doi:10.1016/j.cortex.2021.02.020

Cited by 8 publications

(18 citation statements)

References 127 publications

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“…Importantly, our null effects of the number of near semantic neighbors are in line with previous work using a simple picture naming paradigm (Hameau et al, 2019; Lampe et al, 2017); the studies that found significant effects used a speeded naming paradigm. Similarly, not all previous studies have found significant effects of typicality (Morrison et al, 1992; Woollams, 2012).…”

Section: Discussionsupporting

confidence: 90%

“…Fieder et al also found that a higher number of near semantic neighbors led to slower responses in speeded naming. However, Hameau et al (2019), Lampe et al (2017), and Bormann (2011; using a similar measure) found no significant effects in standard picture naming on either errors or response latencies.…”

Section: Review Of the Previous Literature On Feature-based Semantic ...mentioning

confidence: 94%

“…Second, we incrementally increase the complexity of the analysis to ultimately, simultaneously, examine the effects of six feature-based semantic variables (number of near semantic neighbors, semantic similarity, number of semantic features, typicality, intercorrelational density, distinctiveness) while also controlling for important psycholinguistic variables known to affect picture naming. Hence, a, preregistered (Open Science Framework: https://osf.io/yw6ma/, Lampe et al, 2019), threefold approach to the analysis was used which conceptually replicates and extends Rabovsky et al's study. The three separate analyses addressed the following two research questions:…”

Section: The Present Studymentioning

confidence: 98%

“…A standard continuous picture naming experiment using simple picture naming without context manipulation was conducted to examine the effect of semantic variables on word production processes. The experimental procedure of this study and the three main analyses were preregistered on the Open Science Framework (Lampe et al, 2019; https://osf.io/yw6ma/) and the data and analyses scripts are available there. The materials are available on request from the corresponding author.…”

Section: Study 2: Picture Naming Experimentsmentioning

confidence: 99%

See 3 more Smart Citations

Semantic variables both help and hinder word production: Behavioral evidence from picture naming.

Lampe¹,

Hameau²,

Nickels³

2022

Journal of Experimental Psychology: Learning, Memory, and Cogni

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This research investigated how word production is influenced by six feature-based semantic variables (number of semantic features, intercorrelational density, number of near semantic neighbors, semantic similarity, typicality, and distinctiveness). We simultaneously investigated effects of the six semantic variables on spoken picture naming in a large group of participants (n = 87), while controlling for other psycholinguistic variables. Across analyses, number of semantic features was the most consistent predictor with a facilitatory effect on naming latency and accuracy. In addition, inhibitory effects were found on naming accuracy for intercorrelational density and on naming latency for distinctiveness. The facilitatory effect of number of semantic features is suggested to stem from stronger semantic activation with an increasing number of semantic features, which results in facilitated selection of the word’s lexical representation. In contrast, the inhibitory effect of intercorrelational density is most easily accounted for by increased competition at the lexical level. The mechanism underlying the inhibitory effect of distinctiveness is unclear. These findings indicate that future research on factors affecting word retrieval should also control for effects of number of semantic features, intercorrelational density, and distinctiveness. They also suggest that effects of the other semantic variables (e.g., semantic neighbors) reported in the literature were potentially overestimated due to insufficient control of other semantic and/or psycholinguistic variables.

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Section: Discussionsupporting

confidence: 90%

Section: Review Of the Previous Literature On Feature-based Semantic ...mentioning

confidence: 94%

Section: The Present Studymentioning

confidence: 98%

Section: Study 2: Picture Naming Experimentsmentioning

confidence: 99%

See 2 more Smart Citations

Semantic variables both help and hinder word production: Behavioral evidence from picture naming.

Lampe¹,

Hameau²,

Nickels³

2022

Journal of Experimental Psychology: Learning, Memory, and Cogni

Self Cite

View full text Add to dashboard Cite

show abstract

“…Importantly, we (e.g., Lampe, Hameau, & Nickels, 2021) would argue that facilitatory and inhibitory effects of semantic variables in standard and speeded processing could indeed be explained by spreading activation dynamics at the semantic level in the context of competitive lexical selection in word production (see also, for example, Abdel Rahman & Melinger, 2019; Rabovsky et al, 2016). This interpretation may be more plausible compared to the cognitive control mechanism–based interpretation provided by Mirman (2011), which is outlined below, as facilitatory and inhibitory effects of semantic variables have also been observed in standard picture naming in neurotypical participants (e.g., Lampe, Hameau, Fieder, & Nickels, 2021; Rabovsky et al, 2016), thus in a context where responses were given at a normal pace, rendering involvement of a control mechanism to increase the naming rate unnecessary.…”

Section: Introductionmentioning

confidence: 97%

Are they really stronger? Comparing effects of semantic variables in speeded deadline and standard picture naming

Lampe

Hameau

Nickels

2022

Quarterly Journal of Experimental Psychology

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Investigations of effects of semantic variables on picture naming have often been inconclusive, with some studies reporting significant and others non-significant effects. One potential explanation may relate to the specific naming tasks used: While most previous studies have used standard picture naming, others have used speeded naming that requires participants to prioritise naming speed over accuracy. Speeded naming has been suggested to cause enhanced effects of item-inherent word characteristics due to disruptions of cognitive control and resulting modulations of responsiveness to input. Consequently, this study investigated whether effects are stronger in speeded compared to standard picture naming, focusing on six feature-based semantic variables: number of semantic features, intercorrelational density, number of near semantic neighbours, semantic similarity, typicality, and distinctiveness. The results showed few differences in the variables’ effects between the two naming tasks: In the naming latency analysis, the inhibitory effect of distinctiveness was stronger in the speeded naming task, while in the accuracy analysis the effect of number of semantic features was stronger in the standard naming task. These findings cannot, therefore, be exclusively accounted for by increased responsiveness to input in speeded naming and we discuss possible underlying mechanisms. We conclude that, while some differences in effects of semantic variables between previous studies may have been caused by the specific naming task used, differences between studies more likely depend on statistical power and control of other influential variables in the experiment.

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Stimulus- and Person-Level Variables Influence Word Production and Response to Anomia Treatment for Individuals With Chronic Poststroke Aphasia

Braun

Kıran

2022

J Speech Lang Hear Res

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Purpose: The impact of stimulus-level psycholinguistic variables and person-level semantic and phonological processing skills on treatment outcomes in individuals with aphasia requires further examination to inform clinical decision making in treatment prescription and stimuli selection. This study investigated the influence of stimulus-level psycholinguistic properties and person-level semantic and phonological processing skills on word production accuracy and treatment response. Method: This retrospective analysis included 35 individuals with chronic, poststroke aphasia, 30 of whom completed typicality-based semantic feature treatment. Mixed-effects logistic regression models were used to predict binary naming accuracy (a) at baseline and (b) over the course of treatment using stimulus-level psycholinguistic word properties and person-level semantic and phonological processing skills as predictors. Results: In baseline naming, words with less complex lexical–semantic and phonological properties showed greater predicted accuracy. There was also an interaction at baseline between stimulus-level lexical–semantic properties and person-level semantic processing skills in predicting baseline naming accuracy. With treatment, words that were more complex from a lexical–semantic standpoint (vs. less complex) and less complex from a phonological standpoint (vs. more complex) improved more. Individuals with greater baseline semantic and phonological processing skills showed a greater treatment response. Conclusions: This study suggests that future clinical research and clinical work should consider semantic and phonological properties of words in selecting stimuli for semantically based treatment. Furthermore, future clinical research should continue to evaluate baseline individual semantic and phonological profiles as predictors of response to semantically based treatment. Supplemental Material: https://doi.org/10.23641/asha.21256341

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Effects of semantic variables on word production in aphasia

Cited by 8 publications

References 127 publications

Semantic variables both help and hinder word production: Behavioral evidence from picture naming.

Semantic variables both help and hinder word production: Behavioral evidence from picture naming.

Are they really stronger? Comparing effects of semantic variables in speeded deadline and standard picture naming

Stimulus- and Person-Level Variables Influence Word Production and Response to Anomia Treatment for Individuals With Chronic Poststroke Aphasia

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