Semantic Fluency Task Research Articles

Semantic verbal fluency task: The effects of age, educational level, and sex in Lebanese-speaking adults

Verbal fluency tasks are considered clinically valuable measures of cognitive impairment for they are short, easy to score and administer, and of low costs. Sociodemographic, cultural, and linguistic variables have been shown to affect verbal fluency performance. Information concerning the effects of sociodemographic variables on semantic verbal fluency (SVF) performance in Lebanon and other Arabic-speaking countries is lacking. This study examined the effects of age, educational level, and sex on SVF performance in healthy Lebanese-speaking adults. Data were obtained from 70 adult Lebanese speakers ages 19–79. Participants were presented with fourteen categories, each at a time, and were asked to generate as many exemplars as they could in 60 seconds. Results from regression analyses showed that age (p < .001) and educational level (p = .002) variables had significant effects on overall SVF performance resulting in younger adults and adults with higher educational levels achieving higher SVF scores. Overall, sex did not emerge a predictor of SVF performance. Category-specific differences demonstrate variability. Consequently, the effects education and age present on SVF may be due to their critical roles in the semantic and non-semantic components of SVF, respectively.

Assessing within-task verbal fluency performance: the utility of individual time intervals in predicting incident mild cognitive impairment

ABSTRACT The current study aimed to determine whether word generation performance on individual within-task 20-second time intervals predicted conversion to Mild Cognitive Impairment (MCI) status. Longitudinal data (Mean follow-up=2.95±1.64 years) was collected from cognitively-healthy community-dwelling older adults (N=344; %female=56.1). Performance on letter and semantic fluency tasks was divided into three consecutive within-task 20-second intervals. Incident MCI status (n=50) was determined via established diagnostic case conference. Fully adjusted Cox proportional-hazards regression models revealed that greater word production on semantic fluency across all time intervals significantly predicted a reduced risk of incident MCI [0-20 seconds (HR=0.906, p=0.002), 21-40 seconds (HR=0.904, p=0.02), and 41-60 seconds (HR=0.892, p=0.017)]. Conversely, on letter fluency, greater word production within the 41-60 second time interval only was significantly associated with reduced risk of incident MCI (HR=0.886, p=0.002). Overall, the clinical use of within-interval performance is supported given evidence of predictive sensitivity and ease of administration.

Age-related similarities and differences in the components of semantic fluency: analyzing the originality and organization of retrieval from long-term memory

ABSTRACT The present study investigated age-related differences in retrieval from long-term memory using a semantic fluency task in which participants recalled animals during a 5-minute retrieval period. We evaluated the relative uniqueness of items and their output position within the retrieval process to further elucidate how younger and older adults access and retrieve semantic knowledge in long-term memory. Although older (n = 96, aged 56-79, M = 62.44) and younger adults (n = 98, aged 18-27, M = 23.44) scored similarly for retrieval fluency and originality, these abilities tended to decline when we analyzed age as a continuous variable, indicating some preservation in earlier adulthood, but impairment in older age. Additionally, participants tended to recall common, more easily accessible items before unique, less accessible items, and this pattern was more prominent in older adults. Thus, there are both similarities and differences in semantic fluency in older age.

Introducing the Tactual Span: A New Task for Assessing Working Memory in the Teactile Modality.

The span paradigm is commonly used to assess working memory (WM), predominantly through the visual and auditory routes and less often through the tactile modality. The current study aimed to validate the "Tactual Span", a new task developed to evaluate WM in the tactile modality. Participants were 140 healthy young adults, who performed the Tactual Span alongside span tasks in three additional modalities (auditory, visual, and visuospatial), as well as a selective attention task and a semantic verbal fluency task. The Tactual Span and other span tasks were found to correlate, while correlations with the selective attention and semantic fluency tasks were largely nonsignificant, indicating good construct validity. Cronbach's alpha for both stages as well as skewness and kurtosis were also adequate. An exploratory factor analysis for the forward stage showed that the Tactual Span and Visuospatial Span were loaded on one factor, whereas the Auditory and Visual Spans were loaded on another factor. In the backward stage, all span tasks were loaded on a single factor. The findings provide an initial indication that the Tactual Span task is a feasible and valid tool for assessing WM in the tactile modality.

Lexical-semantic search related to side of onset and putamen volume in Parkinson’s disease

Parkinson's disease (PD) is characterized by dopaminergic cell loss and reduced striatal volume. Prior studies have demonstrated striatal involvement in access to lexical-semantic knowledge and damage to this structure may be evident in the lexical properties of responses. Semantic fluency task responses from early stage, non-demented PD participants with right (PD-R) or left (PD-L) lateralizing symptoms were compared to matched controls on lexical properties (word frequency, age of acquisition) and correlated with striatal volumes segmented from T1-weighted brain MR images. PD-R participants produced semantic fluency responses of a lower age of acquisition than PD-L and control participants (p < 0.05). PD-R age of acquisition responses correlated positively with putamen volume (p < 0.05), while age of acquisition of responses correlated negatively with caudate volume in controls (p < 0.05). Findings provide evidence for a role of the striatum in lexical-semantic access and qualitative changes in lexical access in select PD patients.

Electroencephalographic characteristics of word finding during phonological and semantic verbal fluency tasks.

AimsVerbal Fluency is sensitive to brain damage and is employed to assess language abilities like the size of vocabulary and the semantic‐lexical networks’ integrity and executive functioning abilities particularly inhibition, working memory, and self‐monitoring. Various studies revealed oscillatory changes related to word retrieval during different tasks. However, there are not enough studies on electroencephalographic characteristics of word retrieval routes (phonological or semantic pathway) during free recall. The purpose of our study was to investigate electroencephalography power relationship with semantic and phonological word finding routes during verbal fluency.MethodsIn this within‐subject study, the electroencephalography of 20 healthy participants was recorded during written category and letter fluency tasks and compared with the rest state. Absolute power of the signals in delta (1‐3.5 Hz), theta (4‐7.5 Hz), alpha (8‐12 Hz), and beta (12.5‐30 Hz) was calculated in three lobes (frontal, parietal, and temporal).ResultsA repeated measures ANOVA showed significant interaction of condition × lobe × frequency × side (P < .001). Post hoc test for each lobe showed significant changes in the absolute power of delta, theta and beta for frontal, delta and theta for parietal, and theta and beta for temporal lobes (P‐values < .05).ConclusionSearching the words by phonological entries is associated with decreased beta and increased theta in left frontal lobe. These changes are not necessary for semantic word retrieval strategy.

Frontal aslant tracts as correlates of lexical retrieval in MS

ABSTRACT Introduction Previous studies reveal that a newly described white matter pathway, the frontal aslant tract (FAT), connecting inferior and superior frontal gyri has a role in speech and language functions. We explored the role of this tract in a phonemic and semantic fluency tasks in a cohort of multiple sclerosis patients diagnosed with cognitive impairment. Methods Thirty-five MS patients with varying degrees of cognitive impairment underwent diffusion tensor imaging and the Controlled Associated Word Test. Fractional anisotropy (FA) of FAT and arcuate fasciculus (AF) were obtained through a supervised, atlas-based tissue segmentation and parcellation method. Phonemic and semantic fluency scores were obtained from COWAT. We ran a multivariate regression model, and partial correlation analyses adjusted for age, education, and lesion load, and corrected for multiple comparisons. False discovery rate (FDR) was used for the correction of multiple comparisons. Results Bilateral FAT FA showed significant association with phonemic verbal fluency task (Left; r = 0.46, p = 0.0058 and right; r = 0.46, p = 0.0059) but not semantic fluency task and this relation remained significant after FDR correction (p = 0.02 bilaterally). Although left AF showed some significant association with phonemic fluency task, this relation was insignificant after FDR correction. Conclusion We show that bilateral FAT are correlates of phonemic verbal fluency task but not semantic in an MS cohort with cognitive impairment. This finding suggests that FAT is more specialized in lexical retrieval function as semantic fluency test encompasses all the functions except the lexical retrieval.

Word Retrieval and Lexical Organization in Children With Hearing Loss and Developmental Language Disorder

Word retrieval and lexical organization were explored in 16 Danish children with slight to severe hearing loss (HL), 11 children with developmental language disorder (DLD), and 25 typically developing (TD) children in the age range of 7 to 12 years. There is a special focus on children with HL with and without language difficulties compared with children with DLD. Word retrieval and lexical organization are assessed with a Semantic Verbal Fluency Task. Background assessment of language comprehension is assessed with Test for Reception of Grammar–Version 2 (TROG-2) and nonverbal IQ is assessed with Block Design from the Wechsler Intelligence Scale for Children–Fourth Edition (WISC-IV). Main findings show that children with HL without language difficulties did not show any significant word retrieval or lexical organization difficulties compared with TD children. However, there was a resemblance between children with DLD and children with HL with language difficulties in word retrieval and lexical organization.

Recruiting the right hemisphere: Sex differences in inter-hemispheric communication during semantic verbal fluency

Sex differences in cognitive functions are heavily debated. Recent work suggests that sex differences do stem from different processing strategies utilized by men and women. While these processing strategies are likely reflected in different brain networks, so far the link between brain networks and processing strategies remains speculative. In the present study we seek for the first time to link sex differences in brain activation patterns to sex differences in processing strategies utilizing a semantic verbal fluency task in a large sample of 35 men and 35 women, all scanned thrice. For verbal fluency, strategies of clustering and switching have been described. Our results show that men show higher activation in the brain network supporting clustering, while women show higher activation in the brain network supporting switching. Furthermore, converging evidence from activation results, lateralization indices and connectivity analyses suggests that men recruit the right hemisphere more strongly during clustering, but women during switching. These results may explain findings of differential performance and strategy-use in previous behavioral studies.

Organizing Tagged Knowledge: Similarity Measures and Semantic Fluency in Structure Mining.

Recovering a system's underlying structure from its historical records (also called structure mining) is essential to making valid inferences about that system's behavior. For example, making reliable predictions about system failures based on maintenance work-order data requires determining how concepts described within the work order are related. Obtaining such structural information is challenging, requiring system understanding, synthesis, and representation design. This is often either too difficult or too time-consuming to produce. Consequently, a common approach to quickly eliciting tacit structural knowledge from experts is to gather uncontrolled keywords as record labels-i.e., "tags." One can then map those tags to concepts within the structure and quantitatively infer relationships between them. Existing models of tag similarity tend to either depend on correlation strength (e.g. overall co-occurrence frequencies), or on conditional strength (e.g. tag sequence probabilities). A key difficulty in applying either model is understanding under what conditions one is better than the other for overall structure recovery. In this paper, we investigate the core assumptions and implications of these two classes of similarity measures on structure recovery tasks. Then, using lessons from this characterization, we borrow from recent psychology literature on semantic fluency tasks to construct a tag similarity measure that emulates how humans recall tags from memory. We show through empirical testing that this method combines strengths of both common modeling paradigms. We also demonstrate its potential as a pre-processor for structure mining tasks via a case study in semi-supervised learning on real excavator maintenance work-orders.

Intraindividual variability in verbal fluency performance is moderated by and predictive of mild cognitive impairments.

The current study was designed to achieve 2 primary objectives: (a) determine the moderating effect of mild cognitive impairments (MCI) on intraindividual variability in semantic and letter fluency performance taking into account longitudinal annual assessments; and (b) establish predictive utility for intraindividual variability in semantic and letter fluency performance as a risk factor of incident MCI. Participants were community-residing older adults (n = 514; M age = 75.89 ± 6.45; 55.1% female). Sixty participants were diagnosed with MCI at baseline and 50 developed incident MCI during the follow-up. We operationalized intraindividual variability as word generation slopes derived from 3 consecutive time intervals during the standard 1-min administration of both letter and semantic fluency tasks (i.e., 0-20 s, 21-40 s, and 41-60 s). Linear mixed effects models revealed significant within task slope effects for semantic (estimate = -8.350; p < .0001; 95% confidence interval [CI] = -8.604, -8.095) and letter (estimate = -5.068; p < .0001; 95% CI [-5.268, -4.869]) fluency indicating that word generation declined over the course of both tasks. The two-way interactions of MCI × Slope were significant for semantic (estimate = 1.34; p = .001; 95% CI [0.551, 2.126]) and letter (estimate = 0.733; p = .020; 95% CI [0.116, 1.350]) fluency indicating attenuated slopes among MCI participants compared to controls taking into account repeated annual assessments. Cox proportional-hazards models revealed that attenuated word generation slope, at baseline, in semantic (hazard ratio [HR] = 2.063; p = .015; 95% = 1.149 to 3.702) but not letter (HR = 0.704; p = .243; 95% CI [0.391, 1.269]) fluency was associated with increased risk of incident MCI. Intraindividual variability in verbal fluency performance has clinical and predictive utility; it can be easily incorporated into testing batteries in clinical and research settings. (PsycINFO Database Record (c) 2020 APA, all rights reserved).

Altered verbal fluency processes in older adults with age-related hearing loss.

Epidemiological studies have linked age-related hearing loss (ARHL) with an increased risk of neurocognitive decline. Difficulties in speech perception with subsequent changes in brain morphometry, including regions important for lexical-semantic memory, are thought to be a possible mechanism for this relationship. This study investigated differences in automatic and executive lexical-semantic processes on verbal fluency tasks in individuals with acquired hearing loss. The primary outcomes were indices of automatic (clustering/word retrieval at start of task) and executive (switching/word retrieval after start of the task) processes from semantic and phonemic fluency tasks. To extract indices of clustering and switching, we used both manual and computerised methods. There were no differences between groups on indices of executive fluency processes or on any indices from the semantic fluency task. The hearing loss group demonstrated weaker automatic processes on the phonemic fluency task. Further research into differences in lexical-semantic processes with ARHL is warranted.

PERSONALITY TRAITS AND VERBAL FLUENCY IN 10 COHORTS

Personality traits are associated with cognitive outcomes across the lifespan, including cognitive function in young adulthood and risk of cognitive impairment and dementia in old age. This study examined the association between the Five Factor Model personality traits and verbal fluency in 10 cohorts (11 samples) that totaled more than 90,000 participants (age range 16-101). Meta-analysis indicated that participants who scored lower in Neuroticism, and higher in Extraversion, Openness, and Conscientiousness retrieved more words, independent of age, gender, and education. These associations were consistent across semantic and letter fluency tasks. Moderation analysis indicated that the associations between personality and semantic fluency were stronger in older samples (except for Openness) and among individuals with lower education. This pattern suggests that these associations are stronger in groups vulnerable to cognitive impairment and dementia. Personality traits have pervasive associations with fluency tasks that are replicable across samples and age groups.

Semantic fluency difficulties in developmental dyslexia and developmental language disorder (DLD): poor semantic structure of the lexicon or slower retrieval processes?

Children with dyslexia and/or developmental language disorder (hereafter children with DDLD) have been reported to retrieve fewer words than their typically developing (TD) peers in semantic fluency tasks. It is not known whether this retrieval difficulty can be attributed to the semantic structure of their lexicon being poor or, alternatively, to words being retrieved more slowly despite semantic structure being intact. To test two theoretical models that could potentially account for retrieval difficulties in semantic fluency tasks, namely, the Poor Lexical-Semantic Structure Model and the Slow-Retrieval Model. Both models predict that children with DDLD will retrieve fewer items compared with TD children. However, while the Poor Lexical-Semantic Structure Model predicts a less sophisticated network of semantic connections between words in the lexicon, as evidenced by smaller clusters of related items in children with DDLD, the Slow-Retrieval Model predicts intact inter-item associations in the lexicon, as evidenced by the two groups' clusters being of a similar size. The groups' semantic fluency performance was therefore compared. How semantic fluency performance related to children's language, literacy, and phonological skills was also investigated. A total of 66 children with DDLD aged 7-12 years and 83 TD children aged 6-12 years, all monolingual Greek speakers, were tested on semantic fluency, using the categories 'animals', 'foods' and 'objects from around the house'. The numbers of correct and incorrect responses, clusters and switches, and the average cluster size were computed. Children were also assessed on non-verbal IQ, language, literacy and phonological tasks. In both groups, productivity in semantic fluency tasks correlated strongly with the numbers of clusters and switches, but not with average cluster size. The DDLD group produced significantly fewer correct responses and fewer clusters compared with the TD group, but the two groups showed similar switching and average cluster size. Children's language, literacy and phonological skills significantly predicted the number of correct responses produced, beyond the significant effect of age. We conclude that poorer semantic fluency performance in children with DDLD results not from a lexicon with poor semantic structure, but rather from slower retrieval processes from a lexicon with intact semantic structure. The underlying causes of slow lexical retrieval still need further investigation.

Complex oral semantic verbal fluency in non-brain-damaged adults and individuals with multiple sclerosis and subjective anomia

ABSTRACT Background: Many neurologic conditions, for example multiple sclerosis (MS), are associated with subtle communication and language difficulties. To detect such difficulties, there is a need for valid and reliable methods. While standard aphasia test batteries have been found insufficient, more complex language tasks are believed to be able to distinguish more subtle language difficulties from normal variation in communicative ability. Aims: The aim of this study was to: (1) explore the influence of demographic variables on the results of a novel complex oral semantic fluency task with multiple restrictions in non-brain-damaged (NBD) adults, (2) investigate the construct validity and reliability of the method, and (3) compare the results of NBD individuals and individuals with MS. Method and procedure: One hundred and ten NBD individuals performed the complex task and three standard fluency tasks with single restrictions. Regression analyses were run to assess the influence of demographic factors. Furthermore, 16 individuals with MS and subjective anomia performed the complex task and the results were compared with those for a matched group of NBD individuals. Outcome and results: Age and education influenced the NBD individuals’ scores on the complex task. The NBD individuals’ results on the complex task correlated with those on the three standard fluency tasks. Furthermore, the subgroup of 16 pair-matched NBD individuals produced statistically significantly more adequate responses in the complex task than the group of individuals with MS. However, on an individual level some of the participants with MS performed at level with, or even better than the pair-matched NBD individuals. Provision of scoring guidelines yielded high interrater-reliability. Conclusions: The results illustrate the challenge in attempts to provide formal measures of subtle language disorders. Still, the complex task is a promising assessment tool which may be a complement to existing standard word fluency tasks, although future studies are required to establish the validity and ability to detect subtle language difficulties in different clinical groups.

Shifting Gear in the Study of the Bilingual Advantage: Language Switching Examined as a Possible Moderator.

The bilingual advantage is a heavily debated topic in research on bilingualism. The current study further investigated one specific aspect of bilingualism proposed to be a determining factor for the bilingual advantage, namely language switching behaviour. We investigated whether a bilingual advantage can be detected in the executive functions of inhibition and shifting by comparing monolingual and bilingual participants on a Simon task and a colour–shape switching task. Furthermore, we examined the relation between these executive functions and language switching proficiency, as measured by a semantic verbal fluency task. In addition, the current study set out to investigate the convergence of self-reported language switching estimates and actual language switching proficiency. Results revealed a bilingual advantage for shifting, but not for inhibition. However, this bilingual advantage for shifting was not related to language switching behaviour. Additionally, we were unable to identify a relation between objective and subjective measures of switching abilities. These findings seem to confirm the existence of a bilingual advantage, but also once again validate its elusiveness, as demonstrated by the absence of bilingual benefits on our measure of inhibition. It furthermore questions the validity of switching measures employed in previous studies.

The Structure of the Concepts Related to Love Spectrum: Emotional Verbal Fluency Technique Application, Initial Psychometrics, and Its Validation

Love has been thoroughly studied and a variety of definitions as well as types of love have been described in the literature. Given the data presenting natural language of love concept, the aim of the two present studies is to demonstrate a new technique which enables description of the structure of emotion concepts within love spectrum. This technique is based on emotional verbal fluency tasks. The procedure and the coding system used are reported in the article along with the data on reliability and standardization of the emotional verbal fluency technique. Construct validity is demonstrated by correlations of the emotional verbal fluency tasks with semantic and letter verbal fluency tasks, while discriminant validity is shown by correlations with other measures, such as the Triangular Love Scale, the Love Attitudes Scale, and the State-Trait Anxiety Inventory. The article also presents how the emotional verbal fluency technique can be used in exploring the structure of emotion concepts within love spectrum. This is based on a hierarchical cluster analysis. An examination of connections between semantic clusters identified in the emotional verbal fluency tasks allows describing a structure of the concepts within love spectrum, such as liking, infatuation, love, and show of its differentiation. The presented technique taking into account natural language is of value in assessments of the structure of emotion concepts.

Viability in Multiplex Lexical Networks and Machine Learning Characterizes Human Creativity

Previous studies have shown how individual differences in creativity relate to differences in the structure of semantic memory. However, the latter is only one aspect of the whole mental lexicon, a repository of conceptual knowledge that is considered to simultaneously include multiple types of conceptual similarities. In the current study, we apply a multiplex network approach to compute a representation of the mental lexicon combining semantics and phonology and examine how it relates to individual differences in creativity. This multiplex combination of 150,000 phonological and semantic associations identifies a core of words in the mental lexicon known as viable cluster, a kernel containing simpler to parse, more general, concrete words acquired early during language learning. We focus on low (N = 47) and high (N = 47) creative individuals’ performance in generating animal names during a semantic fluency task. We model this performance as the outcome of a mental navigation on the multiplex lexical network, going within, outside, and in-between the viable cluster. We find that low and high creative individuals differ substantially in their access to the viable cluster during the semantic fluency task. Higher creative individuals tend to access the viable cluster less frequently, with a lower uncertainty/entropy, reaching out to more peripheral words and covering longer multiplex network distances between concepts in comparison to lower creative individuals. We use these differences for constructing a machine learning classifier of creativity levels, which leads to an accuracy of 65.0 ± 0.9 % and an area under the curve of 68.0 ± 0.8 % , which are both higher than the random expectation of 50%. These results highlight the potential relevance of combining psycholinguistic measures with multiplex network models of the mental lexicon for modelling mental navigation and, consequently, classifying people automatically according to their creativity levels.

B-10 Cognition, Depressive Symptoms and Disability in Patients with Migraine

Abstract Objective To examine the relationship between cognition and disability, and to evaluate the hypothesis that depressive symptoms moderate this relationship. Method Seventy-seven adults with migraine (M age = 45.2, SD = 7.4, 89.6% female, 85.7% White, Non- Hispanic, and 46.8% with a graduate degree) recruited from a headache center completed surveys assessing demographics, disability, (Headache Disability Inventory [HDI]), depressive symptoms (PROMIS Depression), and cognition (Trail Making Test, WAIS-IV Coding and Digit Span, Rey Auditory Verbal Learning Test, Rey Complex Figure Test, Stroop, Letter and Animal Fluency). Correlations examined relationships between cognition and disability; linear regressions examined the interaction between cognition and depressive symptoms on disability. Results Higher HDI was associated with lower Animal Fluency (ρ = -.28, p = .014) and Coding (r = -.23, p = .048). PROMIS Depression did not moderate the relationships between Coding (β = -.57, p = .443) and the HDI or Animal Fluency (β = -.69, p = .422) and the HDI. When controlling for the relationship between PROMIS Depression and HDI (β = .51=, p = &lt; .01), Coding was no longer significant (β =-.09, p = .384). In another model, when controlling for the relationship between PROMIS Depression and HDI (β = .51=, p = &lt; .01), Animal Fluency was no longer significant (β = -.15, p = .137). Conclusion Poorer performance on attention/processing speed and semantic fluency tasks were associated with headache-related disability. These relationships were not moderated by depressive symptoms and were no longer significant when adjusting for depressive symptoms.

A-41 Verbal Fluency and Switching Accuracy Differences in Pediatric Epilepsy Pre- and Post- Surgery

Abstract Objective In patients with epilepsy, research is variable with regard to language difficulties. Previous research generally focuses on phonemic and semantic verbal fluency in pediatric populations post-surgery; however, few studies examine category switching accuracy. This study compared phonemic fluency, categorical fluency, switching accuracy, and the number of switches among pre-surgical and post-surgical groups. Methods Participants included 31 epilepsy patients (age 5-20 years old; M = 12.23 years pre-surgery; M = 14.72 years post-surgery; 20 males, 11 females) who underwent neuropsychological evaluations prior to and following open brain resection surgery (i.e., temporal lobectomy, temporal resection, frontal lobectomy). Verbal Fluency was assessed by the Delis-Kaplan Executive Functioning System (D-KEFS), measuring phonemic fluency, categorical fluency, switching accuracy, and the number of switches. Results Statistically significant differences were found between groups on the D-KEFS Verbal Fluency subtest using a one-way ANOVA. Specifically, switching accuracy decreased following surgery, F(1,25) = 6.470, p = 0.02 (M = 104.44 pre-surgery, M = 89.44 post-surgery). Further, a downward trend was noted regarding the number of switches between the two groups, F (1, 26) = 3.172, p = 0.09; however, no differences were found in phonemic, F(1,34) = 0.854, p = 0.63, and categorical, F(1,35) = 0.828, p = 0.37, fluency tasks. Conclusions Results from this study revealed a decrease in the participants ability to accurately switch between verbal categories following brain resection surgery. Similarly, a downward trend was noted for number of switches completed pre- and post- surgery. Consistent with previous research, phonemic and semantic verbal fluency tasks remain unchanged post-surgery. Implications of this study highlight the need to assess executive functioning after surgery as it has an impact on treatment outcome and school planning.