Examining the Relationship Between Task-Switching and Speech Errors in Parkinson's Disease

Inhibitory Control, Cognitive Flexibility, and the Production of Disfluencies in Children Who Do and Do Not Stutter

“…Only three studies have been conducted on nonstuttering populations, with inconsistent findings. Our findings align with those of Hart (2008) and Dayalu et al (2022), who reported an association between cognitive flexibility and disfluency in typically developing preschool children and people diagnosed with Parkinson's, respectively. Aylward (2020), on the other hand, found no association between cognitive flexibility and speech disfluencies during a picture description task in children and adolescents with ADHD.…”

“…Various studies have evaluated the role of inhibitory control and cognitive flexibility in speech production in non-stuttering populations of variable age groups (Aylward, 2020;Dayalu et al, 2022;Engelhardt et al, 2010Engelhardt et al, , 2013Hart, 2008;Lee et al, 2017), with mixed findings.…”

“…Although weaknesses in inhibitory control have been associated with increased disfluencies compared to age-appropriate control groups in school-age children, adolescents, and adults with ADHD (Engelhardt et al, 2010(Engelhardt et al, , 2013Lee et al, 2017), other studies (e.g., Aylward, 2020) have not found associations between inhibitory control or cognitive flexibility and speech disfluencies in a similar population. On the other hand, lower cognitive flexibility scores have been associated with increased disfluency in preschoolers (Hart, 2008) and other clinical populations, such as adults with Parkinson's disease (Dayalu et al, 2022).…”