Verbal fluency in three Spanish-English bilingual speakers with TBI

Microstructural analysis of verbal fluency performance in relapsing-remitting multiple sclerosis based on the impact of disability level

Verbal fluency (VF) evaluates language and cognitive abilities. This study compared VF in Relapsing-Remitting Multiple Sclerosis (RRMS) and healthy controls (HC), examining variables including correct responses (CR), mean cluster size (MCS), switches (S), and fluency difference score (FDS). RRMS participants were subgrouped by Expanded Disability Status Scale (EDSS), to explore the relationship between MS severity and VF. Twenty-four RRMS participants and matched HCs underwent Mini-Mental State Exam and VF Test. Statistical analysis compared VF between RRMS subgroups based on severity levels, and in HC. RRMS significantly impacted the CR, and S (CRSF p = 0.01, SSF p = 0.002; CRPF=0.002, SPF p = 0.002), while there was no significant difference in FDS between RRMS groups (p = 0.9). No significant relationship was found between EDSS scores, and VF subtests (CRSF p = 0.061, MCSSF p = 0.46, SSF p = 0.051, CRPF p = 0.521, MCSPF p = 0.966, SPF p = 0.599). In RRMS, our results demonstrate impairments in all VF parameters except the MCSSF+PF, and FDS. This study suggests that intact MCSSF+PF may reflect preserved verbal memory and word recall, while significant switching differences may indicate impaired cognitive flexibility. Similar FDS to those of HC suggest that no performance discrepancy in subtests in RRMS. Intact MCS might be a distinctive pattern in the early clinical stage of MS.

The Effect of Language Dominance on Classic Semantic, Action, Emotional, and Phonemic Fluency in Unbalanced Bilinguals

OBJECTIVE

Verbal fluency evaluation in bilingual speakers should include dual-language assessment to obtain a comprehensive profile of word retrieval abilities. This study is the first to compare classic semantic, action, emotional, and phonemic fluency in terms of the magnitude of their performance gaps between the dominant and nondominant language in unbalanced bilingual speakers. We also examined the quantitative relationship between language dominance and verbal fluency performance.

METHOD

Twenty-six bilingual adults completed a comprehensive set of classic semantic ("animals," "vegetables"), action ("do"), emotional ("happy," "sad," "afraid"), and phonemic ("F," "A," "S") fluency tasks in their dominant language (English) and nondominant language (Spanish) in two sessions on separate days. Participants also completed subjective and objective measures of language proficiency.

RESULTS

All tasks yielded fewer correct responses in the nondominant language. The between-languages performance gap was the largest for "animals" and the smallest for emotional fluency. "Happy" yielded the most balanced performance among all semantic tasks and a positivity bias that was unaffected by language dominance. Finally, language dominance scores computed by a newly developed formula indicated relationships between self-rated proficiency and fluency performance.

CONCLUSIONS

This study provides preliminary, normative data of classic semantic, action, emotional, and phonemic fluency that could be used to gauge unbalanced bilingual speakers' performance. Significant impacts of language dominance on "animals" demand caution in using this widely used classic semantic category in evaluating bilingual speakers' performance. The data also underscore the robustness of positivity biases in emotional fluency and the validity of using subjective measures to supplement neuropsychological assessment of fluency performance.

Exploring a peer-based physical activity program in the community for adults with moderate-to-severe traumatic brain injury

PRIMARY OBJECTIVE

To explore the experiences of program mentors, participants, and employees involved in a peer-based physical activity (PA) program for adults with moderate-to-severe TBI, being piloted by a community fitness center, to develop the program as a measurable intervention.

RESEARCH DESIGN

We adopted an exploratory case study approach through an interpretivist paradigm, which focused on discovering realities about the peer-based PA program across the study participants' views, backgrounds, and experiences.

METHODS AND PROCEDURES

Semi-structured focus groups and individual interviews were conducted with nine adult program participants (3 peer mentors, 6 participants), and three program employees. Inductive content analysis was used to develop themes about their perceived experiences.

MAIN OUTCOMES AND RESULTS

44 open-codes were grouped into 10 subthemes and three final themes: 1) program impacts identified the importance of the program in daily life and resulting psychological, physical, and social outcomes; 2) program characteristics highlighted program leaders, accessibility, and social inclusion; 3) program sustainability included program adherence, benefits for the center, and the program's future.

CONCLUSIONS

Perceptions of program experiences and outcomes identified how peer-based PA for adults with moderate-to-severe TBI can lead to meaningful activities, functioning better, and buy-in from all parties. Implications for research and practice related to supporting health-related behaviors after TBI through group-based, autonomy-supporting approaches are discussed.

Lexical and Cognitive Underpinnings of Verbal Fluency: Evidence from Bengali-English Bilingual Aphasia

Research in bilingual healthy controls (BHC) has illustrated that detailed characterization of verbal fluency along with separate measures of executive control stand to inform our understanding of the lexical and cognitive underpinnings of the task. Such data are currently lacking in bilinguals with aphasia (BWA). We aimed to compare the characteristics of verbal fluency performance (semantic, letter) in Bengali-English BWA and BHC, in terms of cross-linguistic differences, variation on the parameters of bilingualism, and cognitive underpinnings. BWA showed significant differences on verbal fluency variables where executive control demands were higher (fluency difference score, number of switches, between-cluster pauses); whilst performed similarly on variables where executive control demands were lower (cluster size, within-cluster pauses). Despite clear cross-linguistic advantage in Bengali for BHC, no cross-linguistic differences were noted in BWA. BWA who were most affected in the independent executive control measures also showed greater impairment in letter fluency condition. Correlation analyses revealed a significant relationship for BWA between inhibitory control and number of correct responses, initial retrieval time, and number of switches. This research contributes to the debate of underlying mechanisms of word retrieval deficits in aphasia, and adds to the nascent literature of BWA in South Asian languages.