Search

Prior work on bilingual memory has largely focused on working memory and less on autobiographical memory. In the present study, we tested the effect of bilingualism on autobiographical memory and examined whether an effect would be moderated or mediated by working memory. Spanish-English bilingual and English-only monolingual adults completed an autobiographical cued-recall task, as well as a working memory measure. Memories were coded for retrieval speed and propositional idea density. Bilingual status was associated with faster memory retrieval but did not affect propositional idea density. Better working memory was associated with slower memory retrieval but did not affect propositional idea density, nor did working memory moderate or mediate the effect of bilingualism. Together, these results indicate an effect of bilingualism on the speed of autobiographical memory retrieval that does not extend to autobiographical memory content and suggest that the effect of bilingualism is independent of the effect of working memory. [ABSTRACT FROM AUTHOR]

Purpose: There is conflicting evidence regarding effects of bilingualism on inhibition, and the mechanisms that might underlie the effects remain unclear. A prominent account views additional demands on structural language use in bilinguals as being at the root of bilingual effects on inhibition. In this study, we tested the novel hypothesis that social-pragmatic skills (alone or together with structural language skills) are associated with inhibition in bilingual children. Method: Parents of 114 typically developing 8- to 11-year-old Spanish-English bilingual children completed the Children's Communication Checklist-Second Edition to index social pragmatics and the Behavior Rating Inventory of Executive Function to index executive functioning skills. The Inhibit clinical scale score reflected children's inhibition. Children's language ability was indexed by the Clinical Evaluation of Language Fundamentals-Fourth Edition in English and Spanish. Length of bilingualism was operationalized continuously as the length of time children had been exposed to both languages in their lifetime. Moderation analyses tested the effects of structural language, social-pragmatic skills, and length of bilingual experience, and their interactions on inhibition. Results: While structural language skills were not associated with inhibition, they moderated the relation between social-pragmatic skills and inhibition, such that children with better social-pragmatic skills demonstrated better inhibition, and this effect was stronger for children with better structural language skills. Furthermore, longer length of bilingual experience was associated with better inhibition, and this effect was not moderated by any other predictor. Conclusion: These results confirm a graded relationship between bilingualism and inhibition, and indicate that this association is not qualified by structural language or social-pragmatic skills. [ABSTRACT FROM AUTHOR]

Background: Children with developmental language disorder (DLD) have deficits in verbal and non‐verbal processing relative to typically developing (TD) peers, potentially reflecting difficulties in working memory, processing speed and inhibition of interference. We examined working memory in children with DLD using the serial‐order‐in‐a‐box–complex span (SOB‐CS) interference‐based model, which posits a time‐based mechanism, free time, that governs how interference affects processing performance. Aims: (1) To determine the degree to which children with DLD and TD children differ in the amount of free time available during working memory tasks, and whether potential group differences in free time differ depending on the domain of task demands? (2) To determine the relationship between free time and interference effects on working memory accuracy in children with DLD relative to TD peers. Methods & Procedures: We examined the relationship between free time and working memory in children aged 9–13 years with DLD relative to age‐matched TD peers. Working memory tasks involved five conditions that varied verbal versus non‐verbal task demands in an interference processing phase relative to a recall test phase. Free time was the time between response on the interference processing task and onset of the recall test phase. Outcomes & Results: DLD and TD groups did not differ in total free time in any condition. Results indicated group differences in the relationship between free time and accuracy in the conditions involving verbal recall, but not non‐verbal recall. In the verbal‐only condition, relatively more free time was associated with worse accuracy for the DLD group, but with better accuracy for the TD group. In the condition with verbal recall paired with non‐verbal interference processing, relatively more free time was associated with better accuracy for the DLD group, but not for the TD group. Conclusions & Implications: The overall findings suggest that free time between cognitive operations is positively associated with working memory for both verbal and non‐verbal recall, except in the presence of high verbal interference for the DLD group (i.e., verbal interference paired with verbal recall). This finding may reflect poor encoding and attention under particularly challenging verbal processing demands for the DLD group. This study also demonstrates the importance of considering the interrelationships between processing speed and interference in working memory performance. What this paper adds: What is already known on the subject: DLD is characterized by core deficits in verbal processing, but also deficits in non‐verbal processing. Processing‐based hypotheses of DLD—limited verbal working memory, slowed processing speed and inefficient inhibition—do not fully account for behavioural profiles in DLD when considered separately, yet there is evidence suggesting interrelationships among these factors. What this paper adds to existing knowledge: The current study tests the key mechanism posited by a theoretical framework that has the potential to integrate these processing‐based hypotheses. Our findings indicate that the effect of this mechanism differed in DLD relative to TD peers in the presence of high verbal task demands. Our findings also demonstrate the importance of considering the interrelationships among cognitive processes in children with DLD. What are the potential or actual clinical implications of this work?: In practice, results from the current study suggest that children with DLD may benefit from supplementing verbal information with non‐verbal information and from pauses between successive presentations of verbal information. These strategies may support their ability to maintain and act on information during verbal processing. [ABSTRACT FROM AUTHOR]

The current study examined the effect of speaker variability on children's cross-situational word learning (XSWL). The study also examined the role of bilingual experience and sustained attention. Forty English monolingual children and 40 Spanish-English bilingual children ages 4–7 completed a XSWL task in a Single Speaker Condition and a Multiple Speaker Condition. Results indicated that speaker variability neither facilitated nor hindered XSWL. While monolingual children outperformed bilingual children, speaker-variability effects did not fluctuate across the two language groups. Notably, exposure to multiple speakers facilitated XSWL in children with poorer sustained attention skills, suggesting that variability in the input may be especially useful to children with poorer cognitive processing abilities. [ABSTRACT FROM AUTHOR]