Comparative Study of “The Number Sets Test” Score in Reading Disability Patients with/ without Mathematics Disability

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Charachol Sachabadee
Manas Soongprasit


Objective : To study the differences of the Number Sets Test scores between children
with reading disability and reading disability with co-morbid mathematics disability
Method : The study was conducted by collecting data in children with learning
disabilities, currently studying in Primary school grade 3-4, those were followed up at
the Child and Adolescent Psychiatric Outpatient Department, Ramathibodi Hospital
during June - December 2019. Population were divided into 2 groups 1. children with
reading disability (RD) 2. children with reading disability with co-morbid mathematics
disability (reading disability with mathematics disability; RD / MD). Data were collected
in general information of patients and families, underlying disease, current medication,
family history of learning disability, Wechsler Intelligence Scale for Children (WISC) and
Wide Range Achievement Test-Thai (WRAT-Thai) report. The population then proceed
to test Thai version of Number Sets Test, in which the researcher was authorized by the
test developer and translated into Thai (according to standard research protocol).
Result : The 2 groups of participants have significantly different in the Number Sets Test
Thai version scores. The mean score of the children with reading disability (RD) is 57.81
points (primary school year 3 = 54.04 points, year 4 = 60.65 points) and groups with
co-morbid mathematics disability (RD / MD). is 35.11 points (primary school year 3 =
32.13 points, year 4 = 38.54 points).
Conclusion : The Number Sets Test Thai version has a mean total score that can identify
the presence or absence of co-morbidity with mathematic disability in the population
of children with reading disability. The cut-point score is 47.5.


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How to Cite
Sachabadee ช., & Soongprasit ม. (2021). Comparative Study of “The Number Sets Test” Score in Reading Disability Patients with/ without Mathematics Disability. Journal of the Psychiatric Association of Thailand, 66(1), 3–14. Retrieved from
Original Articles


1. Soares N, Evans T, Patel D. Specific learning disability in mathematics: a comprehensive review. Translational Pediatrics 2017;7(1):48-62.
2. Piyasil V, Wangtan S. Learning Disorders and Comorbidity. Journal of the Psychiatrist Association of Thailand 2015; 60(4):287-296
3. Gersten R, Jordan NC, Flojo JR. Early identification and interventions for students with mathematics difficulties. J Learn Disabil 2005;38(4):293-304.
4. Geary DC. Mathematics and Learning Disabilities. J Learn Disabil 2004;37(1): 4-15.
5. Mazzocco MM, Feigenson L, Halberda J. Impaired acuity of the approximate number system underlies mathematical learning disability (dyscalculia). Child Dev 2011;82(4): 1224-1237.
6. Mol K, Göbel SM, Snowling MJ. Basic number processing in children with specific learning disorders: Comorbidity of reading and mathematics disorders. Child Neuropsychol 2015;21(3):399-417
7. Geary DC, Bailey DH, Hoard MK. Predicting Mathematical Achievement and Mathematical Learning Disability With a Simple Screening Tool: The Number Sets Test. J Psychoeduc Assess 2009;27(3): 265–279.
8. Geary DC, Hoard M, Nugent L. Mathematical Cognition Deficits in Children With Learning Disabilities and Persistent Low Achievement: A Five-Year Prospective Study. J Educ Psychol 2012;104(1): 206-223.
9. Cirino PT, Fuchs LS, Elias JT. Cognitive and mathematical profiles for different forms of learning difficulties. J Learn Disabil 2015;48(2): 156-175.
10. Raddatz J, Kuhn JT, Holling H, Moll K. Comorbidity of Arithmetic and Reading Disorder. J Learn Disabil 2017;50(3): 298-308.
11. Andersson, U. Mathematical competencies in children with different types of learning difficulties. J Educ Psychol 2008;100(1): 48-66.
12. Jordan NC, Glutting J, Ramineni C. The Importance of Number Sense to Mathematics Achievement in First and Third Grades. Learn Individ Differ 2010;20(2):82-88.
13. Swanson HL, Jerman O, zheng X. Math Disabilities and Reading Disabilities: Can They be Separated. J Psychoeduc Assess 2009; 27(3):175-196.
14. Dowker A. Individual differences in normal arithmetical development. In: Donlan, C (ed.) Studies in developmental psychology The development of mathematical skills. : Psychology Press/Taylor & Francis (UK); 1998: 275-302.
15. Pittalis M. The development of student’s early number sense. CERME 9 - Ninth Congress of the European Society for Research in Mathematics Education. Prague: Charles University in Prague, Faculty of Education; 2015:446-452.
16. González-castro, P, Rodríguez C, Cueli M. Math Competence and Executive Control Skills in Students with Attention Deficit/Hyperactivity Disorder and Mathematics Learning Disabilities. Rev de Psicodidactica 2013;19(1):125-143.
17. Kuhn JT, Ise E, Raddatz J. Basic numerical processing, calculation, and working memory in children with dyscalculia and/or ADHD symptoms. Z Kinder Jugendpsychiatr Psychother2016;44(5):365-375.
18. Rubinsten O. Methylphenidate has Differential Effects on Numerical Abilities in ADHD Children with and without Co-Morbid Mathematical Difficulties. Open Psychol J 2008;1(1):11-17.
19. Tonizzi I, Traverso L, Usai MC. Fostering number sense in low SES children: a comparison between low- and high-intensity interventions. Math Educ Res J 2020;
20. National Academies of Sciences, Engineering, and Medicine. Mental Disorders and Disabilities Among Low-income Children. 1st ed. Washington, DC: The National Academies Press; 2015