Semantic fluency in aphasia: clustering and switching in the course of 1 minute

Abstract

The findings suggest that for PWA the search and retrieval process is less productive and more effortful. This is indicated by smaller cluster size, fewer switches associated with increased between-cluster pause durations, as well as overall slowed retrieval times for the words. This shows that the difficulties with verbal fluency performance in aphasia have a strong basis in their lexical retrieval processes, as well as some difficulties in the executive component of the task.

Comparison of animal, action and phonemic fluency in aphasia

“…, Bose et al . , Kiran et al . ) and of a variety of neuropsychiatric diagnoses (reviewed in Thiele et al .…”

“…, Bose et al . , Roberts and LeDorze 1994), non‐aphasic stroke survivors (Kim et al . ), or case studies (Baldo et al .…”

“…Very little is known about these measures in PWA, except that, for animal fluency, PWA produce smaller cluster sizes, pause longer between clusters and produce fewer clusters than neurotypical adults (Bose et al . , Kiran et al . ).…”

Effects of regiolects on the perception of developmental foreign accent syndrome

“…The number of correct words, cluster size, number of switches, and within-and between-cluster pauses were evaluated as a function of the four time intervals. Detailed procedures for clustering and switching analyses were based on previous research (Bose et al, 2017;Troyer et al, 1997). Scoring of each participant's responses was conducted independently by two individuals and interobserver reliability was found to be very high.…”

“…To date, few studies have investigated both quantitative (i.e., number of words) and qualitative (i.e., clustering, switching) aspects of verbal fluency performance in aphasia (Baldo et al, 2001;Kiran et al, 2014;Sarno et al, 2005). Moreover, the temporal characteristics of word retrieval during this task may also shed light on the above debate (Adams et al, 1999;Bose et al, 2017). The goal of the current study was to examine differences in clustering and switching, reflecting linguistic and executive control abilities, respectively, as a function of time between PWA, stroke patients without aphasia, and healthy older adults.…”