Hosana Alves Gonçalves

Componentes atencionais e de funções executivas em meninos com TDAH: dados de uma bateria neuropsicológica flexível

OBJECTIVE: To compare the performance of seven boys with a confirmed diagnosis of ADHD (G1) and 14 healthy controls (G2) in neuropsychological tasks. METHOD: G1 and G2 were matched by gender, age and educational level. They were assessed through attentional and executive tasks (verbal fluency and narrative discourse from MAC Battery, Bells Test - childrens version, Number Random Generation, Go-no Go and auditory N-Back). RESULTS: There were remarkable differences between groups for sustained focused attention, working memory, self-monitoring, initiation and inhibition. CONCLUSION: Contributions for incipient comprehension of relationships among cognitive components in ADHD patients could be identified.

Tomada de decisão em dependentes de crack: um estudo com o Iowa Gambling Task

Decision making in addiction to crack: a study with the Iowa Gambling Task. This study investigated how decision-making process occurs in crack dependents through the Iowa Gambling Task (IGT). 30 participants were selected to crack dependent group – GDC, and 15 non-users controls - GNU, from both sexes. We used the Cocaine Craving Questionnaire-Brief to assess the craving intensity. There were significant differences between groups both in the total-calculus score and in the blocks scores. The learning curve of the GDC was constant and negative during almost all game, except in the very ending when a suggestion of learning was observed. Regarding the task performance’s classification, the analysis showed that a significant number of controls participants achieved a non-impaired performance, opposed to GDC performance. The differences between groups investigated in the IGT corroborate with a previous study finding, about a worse decisionmaking process associated with cocaine and crack addiction.

Effects of age and school type on unconstrained, phonemic, and semantic verbal fluency in children

ABSTRACT Biological and cultural factors have been found to have a significant influence on cognitive development and performance in neuropsychological instruments such as verbal fluency tasks (VFT). Variations of traditional VFT, involving unconstrained word production and increased retrieval times, may provide further data regarding the executive, attentional, mnemonic, and linguistic abilities involved in VFT. As such, the aim of this study was to investigate the impact of age and school type on the performance of 6- to 12-year-old children in unconstrained, phonemic, and semantic VFT. The VFT were administered to 460 participants. The effects of age and school type on verbal fluency (VF) performance were analyzed using a two-way analysis of variance, followed by Bonferroni post-hoc tests (p ≤ .05). A repeated-measures analysis was also used to evaluate VF performance over time (p ≤ .05). Main effects of age and school type were identified on all measures (effect sizes ranged from .05 to .32, p ≤ .05). VF scores increased with age and were higher among private school students. The influence of age on VFT may be associated with the development of executive functions. The impact of type of school on VF performance may be explained by the greater availability of cognitive stimulation (semantic knowledge) provided by private schools and families with better socioeconomic levels.

Development of the Brazilian version of the Child Hayling Test

Introduction: The Hayling Test assesses the components of initiation, inhibition, cognitive flexibility and verbal speed by means of a sentence completion task. This study presents the process of developing the Brazilian version of the Child Hayling Test (CHT) and reports evidence of its content validity. Methods: 139 people took part in the study. The adaptation was performed by seven translators and 12 specialist judges. An initial sample of 92 healthy children was recruited to test a selection of sentences adapted from previous adult and pediatric versions of the instrument, and a sample of 28 healthy children was recruited for pilot testing of the final version. The instrument was developed in seven stages: 1) translation, 2) back-translation, 3) comparison of translated versions, 4) preparation of new stimuli, 5) data collection with healthy children to analyze comprehension of the stimuli and analyses by the authors against the psycholinguistic criteria adopted, 6) analyses conducted by judges who are specialists in neuropsychology or linguistics, and 7) the pilot study. Results: Twenty-four of the 72 sentences constructed were selected on the basis of 70-100% agreement between judges evaluating what they assessed and level of comprehensibility. The pilot study revealed better performance by older children, providing evidence of the instruments sensitivity to developmental factors. Conclusions: Future studies employing this version of CHT with clinical pediatric populations who have frontal lesions and dysfunctions and in related areas are needed to test functional and differential diagnoses of preserved or impaired executive functions.

Avaliação da linguagem e do processamento auditivo na caracterização neuropsicológica do TDAH: Revisão Sistemática

O objetivo foi identificar estudos que investigaram o processamento auditivo (PA) e linguistico na avaliacao clinica e/ou neuropsicologica de criancas/ adolescentes com TDAH. Buscamos em base de dados PubMed de 2000 a 2012 pela sintaxe [language or linguistic] AND [auditory processing or auditory perception] AND [attention deficit or hyperactivity]. Os abstracts foram analisados por double blind review com terceiro juiz para consenso. De 202 resumos, foram analisados 17 artigos completos, com 15 incluidos; 46,67% dos estudos avaliaram a linguagem (palavra e sentenca), 33,33%, PA (integracao binaural, processamento temporal e figura-fundo auditiva) e 13,33%, ambos. O transtorno de leitura foi a comorbidade mais prevalente (46,67%). Em geral, o desempenho linguistico e de PA nao foram analisados para fins neuropsicologicos especificos, mas apenas para identificar comorbidades.

Reading aloud and child development: A cluster-randomized trial in Brazil

This cluster-randomized trial shows that a parenting program promoting reading aloud enhanced child language and cognitive development in a low-income community in Brazil. OBJECTIVES: Many children in low- and middle-income countries fail to reach their developmental potential. We sought to determine if a parenting program focused on the promotion of reading aloud enhanced parent-child interactions and child development among low-income families in northern Brazil. METHODS: This was a cluster-randomized study of educational child care centers randomly assigned to receive an additional parenting program (intervention) or standard child care without a parenting component (control). Parent-child dyads were enrolled at the beginning of the school year and were assessed at enrollment and at the end of the school year. Families in intervention centers could borrow children’s books on a weekly basis and could participate in monthly parent workshops focused on reading aloud. We compared parents and children in intervention and control centers 9 months after the start of the intervention on measures of parent-child interaction and child language, cognitive, and social-emotional development. RESULTS: Five hundred and sixty-six parent-child dyads (279 intervention; 287 control) in 12 child care clusters (26–76 children per cluster) were assessed at enrollment; 464 (86%) contributed follow-up data. Parents in the intervention group engaged in significantly greater cognitive stimulation (Cohen’s d = 0.43) and higher quantity and quality of reading interactions (d = 0.52–0.57) than controls; children in the intervention scored significantly higher than controls on receptive vocabulary (d = 0.33), working memory (d = 0.46), and IQ (d = 0.33). CONCLUSIONS: An innovative program focused on the promotion of parent-child reading aloud resulted in benefits to parent-child interactions and to child language and cognitive development that were greater than those provided by educational child care alone. This promising approach merits further evaluation at scale.

Variability in neurocognitive performance: Age, gender, and school-related differences in children and from ages 6 to 12.

ABSTRACT Cognitive development in children presents peculiarities according to groups of age, gender, and type of school. Few studies have been investigating the effects of all these factors. The aim of this study was to investigate the main effects and the interactions of age, gender, and type of school in 419 children from ages 6 to 12 years old evaluated by the Child Brief Neuropsychological Assessment Battery (NEUPSILIN-Inf). Older children, children in private schools and girls presented better results. Interactions between all three independent variables were observed in different cognitive domains. The results highlight both the heterogeneity and the influence of multiple factors in children’s neuropsychological development.

Clustering and switching in unconstrained, phonemic and semantic verbal fluency: the role of age and school type

ABSTRACT We investigated the role of age and school type on clustering and switching in verbal fluency tasks (VFTs) with Brazilian children. The children were administered unconstrained, phonemic and semantic VFTs with a duration of 150 or 120 s, respectively. Both age and school type influenced all variables and in terms of performance over time. Older children and private school students outperformed the remainder of the sample, with the first 30 s of each VFT usually being the most productive. Although the size of the clusters produced did not differ between groups, the types of clusters did show some variations, with semantic clusters being the most frequent. Our results revealed strong correlations between switching ability and word production in all three VFTs. In conclusion, the executive functions known as planning and cognitive flexibility play a crucial role in word production by organising and facilitating the recall of lexical information from memory.