Research Question: Is non-verbal inhibition correlated with lexical retrieval speed of both nouns and verbs in healthy individuals?
Hypothesis: Non-verbal inhibition will impact performance on lexical retrieval tasks for both nouns and verbs

Collier, Sydney

Dobson, Erin

Greenberg, Mia

Longa, Jessica

English

Sacred Heart University: DigitalCommons@SHU

MethodologyReferencesBackgroundThe Relationship Between Non-Verbal Inhibition and Lexical RetrievalErin Dobson, Sydney Collier,  Jessica Longa, Mia Greenberg, & Marta Korytkowska, PhD, CCC-SLPDepartment of  Communication DisordersSacred Heart UniversityFairfield, CT, USAObjectivesAcknowledgmentsThank you to my CMD-360 class and professor for providing great support and feedback throughout the completion of  this project. I appreciate you all! Next StepsResearch Question: Is non-verbal inhibition correlated with lexical retrieval speed of  both nouns and verbs in healthy individuals?Hypothesis: Non-verbal inhibition will impact performance on lexical retrieval tasks for both nouns and verbs.Gaps in LiteratureProcess of  Lexical Retrieval:(O'seaghdha, 1997)Inhibition: suppression of  competing, non-target information (Higby et al., 2019)Lexical Retrieval: process of  selecting a word from one's mental lexicon (Bialystok, 2008)Literature ReviewInhibition plays a role in lexical retrieval:Study Population Tasks ConclusionGoranova et al., 2021 Individuals with Dyslexia Inhibition: Hayling TestLexical Retrieval: Blocked-Cyclic Picture Naming TaskSemantic competition leads to difficulty inhibiting which results in poor lexical retrievalBialystok et al., 2008 Bilingual Individuals Inhibition: Simon Arrows TaskLexical Retrieval: Boston Naming TaskBilinguals have stronger inhibition skills and accurate lexical retrievalYu et al., 2013 People with Aphasia Cognition: LOTCALanguage: WABCognition and lexical retrieval skills are highly correlatedInhibition does not play a role in lexical retrieval:Study Population Tasks ConclusionHigby et al., 2019 Older Adults (ages 55-84) Inhibition: StroopLexical Retrieval: Boston Naming Task and Action Naming TaskNo relationship between inhibition and response time/accuracy for lexical retrievalArfé et al., 2018 Children with HbSS Sickle Cell Disease (ages 6-12)Inhibition: Flanker TaskLexical Retrieval: Boston Naming TaskNo relationship between inhibition and response time/accuracy for lexical retrievalSummaryInhibition and lexical retrieval have been shown to be closely related as demonstrated by studies analyzing lexical retrievalwhen there is competition and lexical retrieval in bilinguals. In other studies, no relationship has been found which means the existing research is contradictory. To better understand the relationship between inhibition and lexical retrieval, it is important to look at inhibition tasks when they are non-verbal and when the population is healthy individuals.Consistency of  Tasks:• Some studies use verbal inhibition tasks while others use non-verbal inhibition tasksConfounds:• Populations have confounding variables that could contribute to the findings• Sickle Cell Disease = impairment in frontal lobe functioningDiffering Populations:• Limited information on healthy controls!• Arfé, B., Montanaro, M., Mottura, E., Scaltritti, M., Manara, R., Basso, G., Sainati, L., & Colombatti, R. (2018). Selective difficulties in lexical retrieval and nonverbal executive functioning in children with HbSS sickle cell disease. Journal of  Pediatric Psychology, 43(6), 666–677. https://doi.org/10.1093/jpepsy/jsy005• Bialystok, E., Craik, F., & Luk, G. (2008). Cognitive control and lexical access in younger and older bilinguals. Journal of  Experimental Psychology: Learning, Memory, and Cognition, 34(4), 859–873. https://doi.org/10.1037/0278-7393.34.4.859• Goranova, Z. O., Olson, A. C., & Krott, A. (2021). What about lexical competition? exploring the locus of  lexical retrieval deficits in adults with developmental dyslexia. Neuropsychology, 35(8), 822–846. https://doi.org/10.1037/neu0000767• Higby, E., Cahana-Amitay, D., Vogel-Eyny, A., Spiro, A., Albert, M. L., & Obler, L. K. (2019). The role of  executive functions in object- and action-naming among older adults. Experimental Aging Research, 45(4), 306–330. https://doi.org/10.1080/0361073x.2019.1627492• O'seaghdha, P. G., & Marin, J. W. (1997). Mediated semantic-phonological priming: Calling distant relatives. Journal of  Memory and Language, 36(2), 226–252. https://doi.org/10.1006/jmla.1996.2488 Submit an IRBRecruit Participants – Healthy Controls and Disordered Populations Pilot the Study Online – Gorilla Software Provide the Opportunity for the Study to be Completed in PersonClinical ImplicationLexical retrieval is a complex process that includes semantics and phonology, but it also involves executive functions like inhibition.Understanding the relationship between non-verbal inhibition and lexical retrieval will help with tailoring the treatment of  those that struggle with lexical retrieval.If  the hypothesis is...INCORRECT, then working on non-verbal inhibition skills during treatment will not result in an improvement in lexical retrieval performance.CORRECT, then refining non-verbal inhibition skills can improve lexical retrieval performance in terms of  accuracy and response time.Test of  Inhibition:Flanker TaskInhibition: The difference in both accuracy and response time on congruent and incongruent trialsAccuracy and response time for nounsBNT= 60 itemsAccuracy and response time for verbsVNT= 24 itemsParticipants:N=60 HCN=30 PWAMatched for age, education, and SESTasks:Flanker TaskBNTVNTRandomized BlocksAnalysis:Paired T-testWithin Subjects DesignComparing performance on tasks for both accuracy and response time.1Dobson et al.: The Relationship Between Non-Verbal Inhibition and Lexical RetriePublished by DigitalCommons@SHU, 2023

The Relationship Between Non-Verbal Inhibition and Lexical Retrieval

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The Relationship Between Non-Verbal Inhibition and Lexical Retrieval

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