Multisystem Inflammatory Syndrome in Children (MIS-C) is a condition that typically develops in children and adolescents approximately two to four weeks after a COVID-19 infection. The consequences of MIS-C are diverse and include both cognitive and neurological symptoms that can substantially affect an individual’s daily functioning. One of the consequences of MIS-C is said to be reduced verbal fluency, as individuals who have recovered from MIS-C reportedly experience, among other things, difficulties in the areas of working and verbal memory, processing speed, and verbal comprehension. These are also cognitive abilities that are important for performing well on verbal fluency tasks. The aim of this study was therefore to examine whether children and adolescents in Slovenia who recovered from MIS-C demonstrate lower performance on verbal fluency tests compared to their healthy peers. The study included 49 participants in the clinical group (individuals who recovered from MIS-C; M = 12.3 years old) and 52 participants in the control group (M = 12.6 years old). The assessment battery comprised a phonemic fluency test (letters S, I, and T), a semantic fluency test (categories animals and objects), the Verbal Comprehension Index (VCI), the Processing Speed Index (PSI), the Digit Span subtest from the WISC-V or WAIS-IV, and the Rey Auditory Verbal Learning Test (RAVLT). Statistical analyses were conducted using Bayesian regression in R and RStudio.The results indicated that participants in the clinical group produced fewer words than those in the control group during the second (16-30 s) and final (46-60 s) time intervals for the letter I and for the objects category. No group differences were observed in the remaining conditions. Higher scores on the Verbal Comprehension Index were associated with better verbal fluency performance, whereas the other predictors (Processing Speed Index, Working Memory subtest, and RAVLT scores) did not contribute to explaining group differences in verbal fluency outcomes. Although the results regarding the impact of MIS-C on verbal fluency are not consistent and the sample was small, the findings of the master’s thesis nevertheless provide a clearer understanding of the consequences of MIS-C and open further questions in this field.
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