Sexual-orientation-related differences in verbal fluency.

This study examined the performance of 60 heterosexual men, 60 gay men, 60 heterosexual women, and 60 lesbians on 3 tests of verbal fluency known to show gender differences: letter, category, and synonym fluency. Gay men and lesbians showed opposite-sex shifts in their profile of scores. For letter fluency, gay men outperformed all other groups; lesbians showed the lowest scores. For category fluency, gay men and heterosexual women jointly outperformed lesbians and heterosexual men. Finally, gay men outperformed all other groups on synonym fluency, whereas lesbians and heterosexual men performed similarly. A difference between heterosexual men and women was demonstrated on category and synonym fluency only. The findings implicate within-sex differences in the functioning of the prefrontal and temporal cortices. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Ambiguity and verbal fluency in the TAT.

15 TAT cards, divided into low-, medium-. and high-ambiguity groups, were administered to 30 female nursing students. Stimulus ambiguity, defined in terms of variability of themes evoked by a given card, was found to be associated with hesitant and disrupted speech. These findings are explained in terms of the mediating role of uncertainty on speech. An adaptation effect was noted. The later, as opposed to the earlier stories, are associated with a longer reaction time, but fewer "ah's," less silence, and a quicker articulation rate. Finally, significant differences are noted between Ss' verbal fluency indexes, based on all 15 cards and thus independent of stimulus ambiguity, and verbal fluency indexes obtained in an interview situation. These differences are discussed in terms of monological vs. dialogical speech. (21 ref.) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Patterns of growth in verbal abilities among children with autism spectrum disorder.

Verbal skills were assessed at approximately ages 2, 3, 5, and 9 years for 206 children with a clinical diagnosis of autism (n = 98), pervasive developmental disorders-not otherwise specified (PDD-NOS; n = 58), or nonspectrum developmental disabilities (n = 50). Growth curve analyses were used to analyze verbal skills trajectories over time. Nonverbal IQ and joint attention emerged as strong positive predictors of verbal outcome. The gap between the autism and other 2 groups widened with time as the latter improved at a higher rate. However, there was considerable variability within diagnostic groups. Children with autism most at risk for more serious language impairments later in life can be identified with considerable accuracy at a very young age, while improvement can range from minimal to dramatic. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Structural brain correlates of verbal and nonverbal fluency measures in Alzheimer's disease.

This study examined the relationships between regional brain volumes and semantic, phonological, and nonverbal fluency in 32 participants with Alzheimer's disease (AD). Object but not animal semantic fluency correlated with frontal and temporal gray matter volumes. Phonological fluency was not significantly associated with any brain volume examined. Nonverbal fluency was selectively associated with bilateral frontal gray matter volumes. Hippocampal volumes, although markedly reduced in these patients, were not related to any of the fluency measures. Results lend evidence to the importance of the frontal lobes in the directed generation of nonverbal and verbal exemplars by AD patients. Furthermore, both left and right-hemisphere regions contribute to the generation of verbal and nonverbal exemplars. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The structure of verbal abilities in young and older adults.

Four language sample measures as well as measures of vocabulary, verbal fluency, and memory span were obtained from a sample of young adults and a sample of older adults. Factor analysis was used to analyze the structure of the vocabulary, fluency, and span measures for each age group. Then an "extension" analysis was performed by using structural modeling techniques to determine how the language sample measures were related to the other measures. The measure of grammatical complexity was associated with measures of working memory including reading span and digit span. Two measures, sentence length in words and a measure of lexical diversity, were associated with the vocabulary measures. The fourth measure, propositional density, was associated with the fluency measures as a measure of processing efficiency. The structure of verbal abilities in young and older adults is somewhat different, suggesting age differences in processing efficiency. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Contributions of computational fluency to cross-national differences in arithmetical reasoning abilities.

To test the hypothesis that American students have an advantage over East Asian students in arithmetical reasoning once computational abilities and IQ are controlled, 237 U.S. and 218 Chinese college students took arithmetical computational and reasoning tests, along with IQ and spatial abilities tests. Significant national differences favoring the Chinese students were found for all but the spatial test. After controlling for IQ and computational fluency, the Chinese advantage on the arithmetical reasoning tests was still significant but substantively smaller in magnitude. A similar pattern was observed for a sample of 55 U.S. and 80 Chinese high school students. The results, though not fully consistent with the hypothesis, are consistent with the position that the East Asian advantage in computational abilities contributes to the advantage in arithmetical reasoning. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Relationship of reading achievement to verbal processing abilities.

Examined the relationship between reading achievement and ability to process verbal information in 67 achieving and 67 nonachieving readers drawn from 4th-grade classes. Verbal processing abilities were evaluated with 10 instruments, which included measures of memory span, associative learning, semantic association, automatic word processing, and time taken to name pictures, read words, and recode (pronounce) pseudowords. Achieving readers performed better on all measures except automatic word processing. Factor analysis yielded 3 factors, labeled Verbal Coding Speed, Memory Span, and Verbal Operations. Reading comprehension had high loadings on the 1st and 3rd factors but had a low loading on Memory Span. Results suggest that 1 primary component of the reading achievement of 4th-grade children is the ability to perform operations or manipulations on verbal material. (43 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Understanding verbal fluency in healthy aging, Alzheimer's disease, and Parkinson's disease.

Objective: Verbal fluency measures are frequently part of batteries designed to assess executive function (EF), but are also used to assess semantic processing ability or word knowledge. The goal of the present study was to identify the cognitive components underlying fluency performance. Method: Healthy young and older adults, adults with Parkinson's disease, and adults with Alzheimer's disease performed letter, category, and action fluency tests. Performance was assessed in terms of number of items generated, clustering, and the time course of output. A series of neuropsychological assessments were also administered to index verbal ability, working memory, EF, and processing speed as correlates of fluency performance. Results: Findings indicated that regardless of the particular performance measure, young adults performed the best and adults with Alzheimer's disease performed most poorly, with healthy older adults and adults with Parkinson's disease performing at intermediate levels. The exception was the action fluency task, where adults with Parkinson's disease performed most poorly. The time course of fluency performance was characterized in terms of slope and intercept parameters and related to neuropsychological constructs. Speed of processing was found to be the best predictor of performance, rather than the efficiency of EF or semantic knowledge. Conclusions: Together, these findings demonstrate that the pattern of fluency performance looks generally the same regardless of how performance is measured. In addition, the primary role of processing speed in performance suggests that the use of fluency tasks as measures of EF or verbal ability warrants reexamination. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Spatial and verbal abilities in children's crossmodal recognition: A dual coding approach.

Conducted 2 experiments to study the relative importance of visuospatial (VSAs) and verbal referential abilities (VRAs) to 184 English-speaking children's (aged 4 yrs 11 mo to 8 yrs) crossmodal performance under imagery, naming, and control instructions. Using the Minnesota Paper Form(s) Board Test Revised, imagery instructions induced Ss to implement a visual imagery strategy that depended primarily on VSA, whereas naming instructions promoted use of a naming strategy that depended relatively more on VRA. No instructions resulted in use of a verbal/naming strategy similar to that used by naming Ss. (French abstract) (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

The world of competitive Scrabble: Novice and expert differences in visuopatial and verbal abilities.

Competitive Scrabble players spend a mean of 4.5 hr a week memorizing words from the official Scrabble dictionary. When asked if they learn word meanings when studying word lists, only 6.4% replied "always," with the rest split between "sometimes" and "rarely or never." Number of years of play correlated positively with expertise ratings, suggesting that expertise develops with practice. To determine the effect of hours of practice (M = 1,904), the authors compared experts with high-achieving college students on a battery of cognitive tests. Despite reporting that they usually memorize word lists without learning meanings, experts defined more words correctly. Reaction times on a lexical decision task (controlling for age) correlated with expertise ratings, suggesting that experts develop faster access to word identification. Experts' superiority on visuospatial processing was found for reaction time on 1 of 3 visuospatial tests. In a study of memory for altered Scrabble boards, experts outperformed novices, with differences between high and low expertise on memory for boards with structure-deforming transformations. Expert Scrabble players showed superior performance on selected verbal and visuospatial tasks that correspond to abilities that are implicated in competitive play. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Negativism in verbal and nonverbal responses of autistic children.

Studied negativism in 9 autistic, 9 behavior-disturbed, and 9 normal 5-12 yr olds in 3 different stimulus conditions (verbal requests for verbal responses, verbal requests for nonverbal responses, and nonverbal requests for nonverbal responses). Each condition included 2 tasks, which were requested 15 consecutive times. Ss demonstrated that they could perform the tasks before testing, and their responses were scored according to the similarity between the response and the request. Results demonstrate that the autistic and behavior-disturbed Ss responded similarly, except when requests required verbal responses, in which case the autistic Ss were much more negative. Results suggest applications to diagnostic and therapeutic interventions. (17 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Validation of ideational fluency measures of original thinking in children.

Examined original thinking in 142 middle- and lower-class children across a wide range of age (7–13 yrs) and intellectual ability (low average to gifted). The instruments were lenient and stringent solution-standard measures of original problem solving and 2 subtests of the WISC-R. Scores for quantity (popular responses) and quality (unusual responses) were computed for lenient and stringent measures. Two sets of findings that were obtained in all age, intelligence level, and socioeconomic status groups provided impressive support for the construct validity of the conceptualization of the creative process as a problem-solving one, with ideational fluency as an essential component in the process. These were consistently high relationships between corresponding scores on lenient predictor and stringent criterion measures, and of quantity and quality scores within the lenient and the stringent measures. The scores of lower-class Ss on original thinking were lower than those of middle-class Ss when a stringent standard for quality of response was invoked. (33 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Investigation of executive function change following anterior temporal lobectomy: Selective normalization of verbal fluency.

The nociferous cortex hypothesis predicts that electrophysiological normalization to distal extratemporal brain regions following anterior temporal lobectomy (ATL) will result in improvements in executive functioning. The present study examined the effects of seizure laterality and seizure control on executive function change. The authors administered the Wisconsin Card Sorting Test (WCST), Trails B, and the Controlled Oral Word Association Test to 174 temporal lobe epilepsy patients who underwent ATL. No significant changes were found on the WCST or Trails B tests, regardless of surgery side or seizure-free status. However, verbal fluency significantly improved in seizure-free patients. Findings were consistent with the nociferous cortex hypothesis suggesting selective executive function improvement following ATL. These findings are discussed in terms of recent research demonstrating extrahippocampal metabolic normalization following surgery. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Clustering and switching as two components of verbal fluency: Evidence from younger and older healthy adults.

Although verbal fluency is a frequently used neuropsychological test, little is known about the underlying cognitive processes. The authors proposed that 2 important components of fluency performance are clustering (i.e., the production of words within semantic or phonemic subcategories) and switching (i.e., the ability to shift between clusters). In Experiment 1, correlational data from 54 older and 41 younger adults indicated that both components were highly correlated with the number of words generated on semantic fluency, whereas switching was more highly correlated than clustering with the number of words generated on phonemic fluency. On semantic fluency, younger participants generated more words and switched more frequently than older participants; on phonemic fluency, older participants produced larger clusters than younger participants. In Experiment 2, among 22 young adults, divided attention decreased the number of words generated and decreased switching on phonemic fluency only. Overall, findings suggest that clustering and switching are dissociable fluency components and that switching is related to frontal-lobe functioning. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Verbal knowledge and speed of information processing as mediators of age differences in verbal fluency performance among older adults.

Age-related declines in verbal fluency among a large sample of older adults were investigated. Background variables, verbal knowledge, and speed of processing were examined as predictors of verbal fluency and as mediators of age effects. As expected, age-related declines were greater on the excluded letter fluency task than on the initial letter fluency task. Verbal knowledge was a better predictor of initial letter fluency than speed of processing, whereas the reverse was true for excluded letter fluency. However, speed of processing-accounted for more of the age-related variance in both fluency measures than the other predictors. There was no evidence of verbal knowledge compensating for age-related declines in verbal fluency. Results suggest that verbal fluency performance is well maintained in late life and that any age-related decline appears to be mainly due to declines in speed of information processing. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Psycholinguistic abilities of children in isolated communities of Labrador.

A total of 101 kindergarten and Grade-1 children from 4 isolated coastal communities in Labrador were given the Peabody Picture Vocabulary Test, Wechsler Preschool and Primary Scale of Intelligence, and Illinois Test of Psycholinguistic Abilities. The differential psycholinguistic profiles of the Ss are reported. These results offer support for the claim that ecological demands to some extent determine cognitive structures. Results also indicate that the Ss had abilities in a number of areas that were within 1 standard deviation of the mean for the normative sample. These suggest areas that could be capitalized upon in order to make the educational system more meaningful to these children. (French summary) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Pictorial–verbal and analytic–holistic learning strategies in science learning.

Gave study instructions to 383 college students to investigate several learning strategies. All learners except those in the read-twice control were told to study a science chapter by either writing paraphrases or drawing pictures of the material. Additionally, some learners were told to be either analytic, by focusing on details, or holistic, by relating specifics to more inclusive concepts. Individual differences were assessed in verbal ability, pictorial ability, and preference for pictorial or verbal thinking. The study instructions successfully manipulated pictorial–verbal strategies but not analytic–holistic strategies, according to self-reports and judges' ratings. Results reveal weak effects favoring the drawing strategy for males and females and the holistic strategy for females only, but there were no significant interaction effects. (42 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Bilingual aphasia: semantic organization, strategy use, and productivity in semantic verbal fluency

A semantic verbal fluency task (Animals, Foods) was administered to 16 aphasic, bilingual adults in French and English. Each subject was tested twice in each language. The two goals of the study were to compare performance across languages and to determine the effect of a deliberate grouping strategy on productivity. All subjects claimed approximately equal prestroke abilities in both languages. The number of words subjects produced was not significantly different in the two languages. Semantic organization across languages was also similar on Test 1. On Test 2, 8 subjects were instructed to group items by subcategory and 8 simply repeated the task. There was no consistent between-group difference in number of correct words or in the semantic organization of responses. Implications for the clinical use of verbal fluency tests and for further research into bilingual lexicosemantic systems are discussed.     

Parental language and verbal responsiveness to children in crowded homes.

This article is a secondary data analysis of the University of Kansas Language Acquisition Project, which intensively studied, on a regular basis, parent and child language from age 6 months to 30 months. The association between residential density and parent–child speech was examined. Parents in crowded homes speak in less complex, sophisticated ways with their children compared with parents in uncrowded homes, and this association is mediated by parental responsiveness. Parents in more crowded homes are less verbally responsive to their children. This in turn accounts for their simpler, less sophisticated speech to their children. This mediational pathway is evident with statistical controls for socioeconomic status. This model may help explain prior findings showing a link between residential crowding and delayed cognitive development. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Cognitive abilities in Inuit and White children from similar environments.

Previous studies have emphasized the differential abilities of Inuit and White children, concluding that the Inuit have well developed spatial abilities and less well developed verbal-educational and inductive reasoning abilities when compared with White Ss. However, in many studies White and Inuit Ss have not been matched for either socioeconomic status or grade placement. The present study examined Inuit and White Ss from subsistence level fishing communities. Ss were 22 Inuit 1st graders with a mean age of 84.2 mo and White 1st graders as follows: 14 with a mean age of 89.4 mo, 16 with a mean of 83.1, and 22 with a mean of 86 mo. Vocabulary and arithmetic tests adapted from the Wechsler Pre-School and Primary Scale of Intelligence were utilized. There were no significant differences between Inuit and White Ss in spatial, verbal-educational, or inductive reasoning abilities. (French summary) (PsycINFO Database Record (c) 2010 APA, all rights reserved)