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DOI: 10.1590/0004-282X20190178
Combining neuropsychological tests to improve the assessment of arithmetic difficulties in children with ADHD
Combinando testes neuropsicológicos para melhorar a avaliação de dificuldades aritméticas em crianças com TDAH
Abstract
Objective: To compare the ways of evaluating arithmetic skills in Brazilian children with ADHD by combining three validated neuropsychological tests and determining whether they are sensitive to the methylphenidate treatment. Methods: Forty-two children (9–12 years old) participated in the present study: 20 were children with ADHD (DSM-IV) and 22 were age-matched controls. A classification criterion was used for each test separately and one, for their combination to detect the presence of arithmetic difficulties at two time points: baseline (time 1); and when children with ADHD were taking 0.3–0.5 mg/kg of methylphenidate (time 2). The study also assessed children’s subtraction performance, combining parts of these tests. Results: Separately, the tests were only sensitive to differences between groups without medication. However, by combining the three neuropsychological tests, we observed a difference and detected a reduction in arithmetic difficulties associated with the methylphenidate treatment. The same effects were found in subtraction exercises, which require a borrowing procedure. Conclusions: The present study detected arithmetic difficulties in Brazilian children with ADHD and the effects of methylphenidate. Given this improvement in sensitivity, combining tests could be a promising alternative when working with limited samples.
Resumo
Objetivo: Comparar as formas de avaliar as habilidades aritméticas em crianças brasileiras com TDAH, combinando três testes neuropsicológicos validados, e verificar se são sensíveis ao tratamento com metilfenidato. Métodos: Quarenta e duas crianças (9–12 anos) participaram deste estudo: 20 eram crianças com TDAH (DSM-IV) e 22 eram controles pareados por idade. Usamos um critério de classificação para cada teste separadamente e outro para a combinação entre eles, visando detectar a presença de dificuldades aritméticas em dois momentos: início (tempo 1) e quando as crianças com TDAH estavam tomando 0,3–0,5 mg/kg de metilfenidato (tempo 2). O estudo também avaliou o desempenho dessas crianças em operações de subtração, combinando partes desses testes. Resultados: Separadamente, os testes foram sensíveis apenas às diferenças entre os grupos sem medicação. Entretanto, ao combinar os três testes neuropsicológicos, foi possível observar uma diferença e detectar uma redução das dificuldades aritméticas associadas ao tratamento com metilfenidato. Os mesmos efeitos foram encontrados em exercícios de subtração que exigem o procedimento de empréstimo. Conclusões: O estudo foi capaz de detectar dificuldades aritméticas em crianças brasileiras com TDAH e os efeitos do metilfenidato. Dada essa melhora na sensibilidade, combinar testes poderia ser uma alternativa promissora ao trabalhar com amostras limitadas.
Palavras-chave:
teste de matemática - dificuldades aritméticas - dificuldades de aprendizagem - TDAH - metilfenidatoPublication History
Received: 27 August 2019
Accepted: 22 October 2019
Article published online:
13 June 2023
© 2020. Academia Brasileira de Neurologia. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commecial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)
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References
- 1 Barkley RA. Attention-deficit Hyperactivity Disorder. New York: The Guilford Press; 2006.
- 2 Monuteaux MC, Faraone SV, Herzig K, Navsaria N, Biederman J. ADHD and dyscalculia: evidence for independent familial transmission. J Learn Disabil. 2005 Jan-Feb;38(1):86-93. https://doi.org/10.1177/00222194050380010701
- 3 Shalev RS. Developmental dyscalculia. J Child Neurol. 2004 Oct;19(10):765-71. https://doi.org/10.1177/08830738040190100601
- 4 Geary DC. Mathematical disabilities: cognitive, neuropsychological, and genetic components. Psychol Bull. 1993;114(2):345-62. https://doi.org/10.1037/0033-2909.114.2.345
- 5 Rubinsten O, Bedard AC, Tannock R. Methylphenidate has differential effects on numerical abilities in ADHD children with and without co-morbid mathematical difficulties. Open Psychol J. 2008;1(1):11-7. https://doi.org/10.2174/1874350100801010011
- 6 Benedetto-Nasho E, Tannock R. Math computation, error patterns and stimulant effects in children with Attention Deficit Hyperactivity Disorder. J Atten Dis. 1999 Oct;3(3):121-34. https://doi.org/10.1177/108705479900300301
- 7 Grizenko N, Cai E, Jolicoeur C, Ter-Stepanian M, Joober R. Effects of methylphenidate on acute math performance in children with attention-deficit hyperactivity disorder. Can J Psychiatry. 2013;58(11):632-9. https://doi.org/10.1177/070674371305801109
- 8 Pelham WE, Bender ME, Caddell J, Booth S, Moorer SH. Methylphenidate and children with attention deficit disorder. Dose effects on classroom academic and social behavior. Arch Genl Psychiatry. 1985;42(10):948-52. https://doi.org/10.1001/archpsyc.1985.01790330028003
- 9 Landerl K, Bevan A, Butterworth B. Developmental dyscalculia and basic numerical capacities: a study of 8-9-year-old students. Cognition. 2004 Sep;93(2):99-125. https://doi.org/10.1016/j.cognition.2003.11.004
- 10 McCloskey M, Caramazza A, Basili A. Cognitive mechanisms in number processing and calculation: Evidence from dyscalculia. Brain Cognition. 1985 Apr;4(2):171-96. https://doi.org/10.1016/0278-2626(85)90069-7
- 11 Mattos P, Serra-Pinheiro MA, Rohde LA, Pinto D. Apresentação de uma versão em português para uso no Brasil do instrumento MTA-SNAP-IV de avaliação de sintomas de transtorno do déficit de atenção/hiperatividade e sintomas de transtorno desafiador e de oposição. Rev Psiquiatr Rio Gd Sul. 2006;28(3):290-7. http://dx.doi.org/10.1590/S0101-81082006000300008
- 12 Benczik EBP. Manual da Escala de Transtorno de Déficit de Atenção/Hiperatividade. 1. ed. São Paulo: Casa do Psicólogo; 2000. p.64.
- 13 Bastos JA. Evaluation of the children's mathematics abilities from final elementary cycles of public and private schools in São José do Rio Preto SP, Brazil. Arq Neuropsiquiatr. 2003;61(3A):699-9. http://dx.doi.org/10.1590/S0004-282X2003000400034
- 14 Stein LM. TDE: teste de desempenho escolar: manual para aplicação e interpretação. São Paulo: Casa do Psicólogo ; 1994. p.35.
- 15 Wechsler D. Wechsler Intelligence Scale for Children - Third Edition - WISC- III. San Antonio, TX: The Psychological Corporation; 1991. p.294.
- 16 Strauss E, Sherman EMS, Spreen O. A compendium of neuropsychological tests. New York: Oxford University Press; 2006.
- 17 Dehaene S, Molko N, Cohen L, Wilson AJ. Arithmetic and the brain. Curr Opin Neurobiol. 2004;14(2):218-24. https://doi.org/10.1016/j.conb.2004.03.008
- 18 Geary DC. Consequences, characteristics, and causes of mathematical learning disabilities and persistent low achievement in mathematics. J Dev Behav Pediatr. 2011;32(3):250-63. https://doi.org/10.1097/DBP.0b013e318209edef