Modelo de análisis en dos mitades para tareas de fluidez semántica

Verbal fluency, naming and verbal comprehension: three aspects of language as predictors of cognitive impairment

“…Our results revealed that inter-group differences in verbal fluency were more noticeable during the first 15 seconds. In both groups, the majority of evocation was performed in the first half minute and then decreased, which confirmed that the level of effort is lower during the first seconds of execution (Fernández-Turrado et al, 2007). The GB (moderate-severe dementia group) demonstrated difficulty in generating words within the same subcategory ('clustering') and, more notably, in switching from one subcategory to another ('switching'), as it is more common for individuals to remain within the subcategory, e.g., 'domestic animals' (Troyer et al, 1997).…”

“…It has also been observed that Alzheimer's disease results in a dual impairment of process and content of conceptual knowledge in the semantic memory (Reilly, Peelle, Antonucci, & Grossman, 2011). Semantic fluency has also been associated with other variables, such as age, sex and educational level (Carnero, Lendínez, Maestre, & Zunzunegui, 1999), as well as with the test duration (Fernández-Turrado et al, 2007).…”

Verbal fluency in the detection of mild cognitive impairment and Alzheimer's disease among Brazilian Portuguese speakers: the influence of education

“…Analyses of clustering (the ability to generate semantically related items) and switching (the ability to change to a different cluster) have been proposed as means of increasing the sensitivity of the task as well as the analysis of the performance of subjects in the second half of the task, where there are fewer items available for retrieval. These analyses provide evidence of the greater demand on the executive and working memory components of the task (Troyer et al, 1998;Gomez and White, 2006;Fernández-Turrado et al, 2007).…”

Discriminative validity of an abbreviated Semantic Verbal Fluency Test

“…23 , 24 In 2007, Fernández-Turrado et al published normative data for the two halves of a semantic verbal fluency task (animal category) in the Spanish language; however the discriminative capacity of each half has not been analysed. 25 In the same year, Cueto et al described an early detection test for AD that included a 30-second SVF task; 26 the sensitivity and specificity was reported for the whole test but not for the SVF alone. These two studies considered the 30-second semantic verbal fluency test for the first time in the Spanish language.…”