Evaluation of Language Predictors of Main Concept Production in Spanish/English Bilingual Discourse Using Nicholas and Brookshire Stimuli Purpose A conceptual framework of bilingual aphasia assessment requires an understanding of the variables that influence discourse in bilingual speakers. This study aimed to determine predictors of main concept (MC) production, a measure of discourse completeness, as well as the effect of language dominance on MCs. Method The ... Research Article
Research Article  |   February 06, 2018
Evaluation of Language Predictors of Main Concept Production in Spanish/English Bilingual Discourse Using Nicholas and Brookshire Stimuli
 
Author Affiliations & Notes
  • Ana Rivera
    Department of Speech, Language, and Hearing Sciences, University of Florida, Gainesville
  • Jonathan Hirst
    Department of Speech, Language, and Hearing Sciences, University of Florida, Gainesville
  • Lisa A. Edmonds
    Communication Sciences and Disorders Program, Department of Biobehavioral Sciences, Teachers College, Columbia University, New York, NY
  • Disclosure: The authors have declared that no competing interests existed at the time of publication.
    Disclosure: The authors have declared that no competing interests existed at the time of publication. ×
  • Correspondence to Lisa A. Edmonds: lisa.edmonds@tc.columbia.edu
  • Editor: Krista Wilkinson
    Editor: Krista Wilkinson×
  • Associate Editor: Li Sheng
    Associate Editor: Li Sheng×
Article Information
Cultural & Linguistic Diversity / Research Articles
Research Article   |   February 06, 2018
Evaluation of Language Predictors of Main Concept Production in Spanish/English Bilingual Discourse Using Nicholas and Brookshire Stimuli
American Journal of Speech-Language Pathology, February 2018, Vol. 27, 52-70. doi:10.1044/2017_AJSLP-15-0186
History: Received November 29, 2015 , Revised October 18, 2016 , Accepted June 5, 2017
 
American Journal of Speech-Language Pathology, February 2018, Vol. 27, 52-70. doi:10.1044/2017_AJSLP-15-0186
History: Received November 29, 2015; Revised October 18, 2016; Accepted June 5, 2017

Purpose A conceptual framework of bilingual aphasia assessment requires an understanding of the variables that influence discourse in bilingual speakers. This study aimed to determine predictors of main concept (MC) production, a measure of discourse completeness, as well as the effect of language dominance on MCs.

Method The Nicholas and Brookshire (1993)  picture stimuli were used to elicit English and Spanish discourse in 83 young bilinguals. Participant-reported variables (e.g., proficiency self-ratings) and measured language variables (e.g., correct information units [CIUs] in discourse) were entered into regressions to determine potential MC predictors. A repeated-measures analysis of variance evaluated MCs within and across dominance groups categorized by speaking self-ratings.

Results Measured language variables (number of CIUs, naming accuracy) were most predictive of MCs. The participant-reported variable most associated with MC production was self-rating of speaking proficiency. Spanish- and English-dominant groups produced more MCs in their dominant language; the balanced group produced more English MCs. Between-groups differences were observed.

Conclusions Two measures related to lexical retrieval (CIUs and naming) were most predictive of MC production across languages. Participant ratings of speaking proficiency were also highly correlated to MCs. They also accurately reflected dominance, though balanced bilinguals overestimated their Spanish abilities.

Supplemental Material https://doi.org/10.23641/asha.5708605

Acknowledgments
We would like to acknowledge and extend our gratitude to the participants in this study and to Vanessa Maltby for her efforts in participant recruitment and testing.
Order a Subscription
Pay Per View
Entire American Journal of Speech-Language Pathology content & archive
24-hour access
This Article
24-hour access