Original Article

Internal Consistency and Item Analysis of the Persian Version of the Child Sensory Profile 2 in Vulnerable Populations


Objective: The purpose of the present study was to establish the item analysis and internal consistency of the Persian version of the Child Sensory Profile 2 in 2 groups of typical and atypical children (autism spectrum disorder and learning disabilities) aged 3 to 14 years.

Method: The sample of this study included 120 typical and atypical children aged 3 to 14 years who referred to schools and rehabilitation centers in Tehran were selected using multistage sampling method. To collect data, the Child Sensory Profile 2 questionnaire was used, which is a set of questionnaires of the Sensory Profile 2. To analyze the data, the discrimination index was used to determine the discriminant validity of the Child Sensory Profile 2, and the Cronbach's alpha coefficient was used to determine the reliability in terms of internal consistency.

Results: Discrimination index was satisfactory for all the items of the Child Sensory Profile 2. The values of Cronbach's alpha ranged from 0.795-0.919 in typical children and 0.617-0.901 in autistic children, and 0.792-0.920 in children with learning disabilities.

Conclusion: The Persian version of the child sensory profile 2 is a valid (discrimination with vulnerable populations) and reliable (internal consistency) tool for assessing sensory processing.

1. Mirzakhani N, Dehghan F, Shahbazi M, Shahbazi F. Frequency of Sensory Processing Disorders in Children Aged 5 to 11 Years Old. JMUMS. 2019;29(174):72-81.
2. Shahbazi M, Mirzakhani N. Assessment of sensory processing characteristics in children between 0 and 14 years of age: A systematic review. IJCN. 2021; 15 (1): 29-46.
3. Ahmadi Kahjoogh M, Farahbod M, Soortigi H, Rassafiani M. Sensory Processing Patterns in Children with Autism Disorder From Winnie Dunn’s Perspective. JOEC. 2011;10(4):385-93.
4. JAMSHIDIAN E, Jalili N, HAGHGOO H. The effect of sensory processing abilities on participation of children with autism. DANESHVAR MEDICINE.2016; 23(120):33-44.
5. Ahn RR, Miller LJ, Milberger S, McIntosh DN. Prevalence of parents' perceptions of sensory processing disorders among kindergarten children. Am J Occup Ther. 2004;58(3):287-93.
6. Koenig KP, Rudney SG. Performance challenges for children and adolescents with difficulty processing and integrating sensory information: a systematic review. Am J Occup Ther. 2010;64(3):430-42.
7. Dunn W. The sensory profile manual. 1th ed. SanAntonio, TX: Psychological Corp; 1999.
8. Dunn W. Sensory Profile 2. 1th Ed. Bloomington, MN: Pearson; 2014.
9. Dean E, Dunn W, Little L. Validity of the Sensory Profile 2: A Confirmatory Factor Analysis. Am J Occup Ther. 2016; 70(4): 1.
10. Dean E, Dunn W. Reliability and validity of the child sensory profile 2 Spanish translation. Am J Occup Ther. 2018;72(4_Supplement_1):7211500054p1-p1.
11. Chojnicka I, Pisula E. Adaptation and psychometric properties of the Polish version of the Short Sensory Profile 2. Medicine (Baltimore). 2019;98(44):e17689.
12. Dunn W. Supporting Children to Participate Successfully in Everyday Life by Using Sensory Processing Knowledge. Infants & Young Children. 2007; 20 (2): 84-101.
13. Dudek, Frank J. The continuing misinterpretation of the standard error of measurement. Psychological Bulletin. 1979; 86(2): 335-37.
14. Shahbazi M. Translation and Psychometric testing of the Persian version of the sensory profile 2 (in Persian) [MSc thesis]. Tehran; School of Rehabilitation, Shahid Beheshti University of Medical Sciences; 2019. 52-66.
15. Quaigrain K, Arhin A K. Using reliability and item analysis to evaluate a teacher-developed test in educational measurement and evaluation. Cogent Education. 2017; 4(1):1-11.
16. Boyle GJ. Does item homogeneity indicate internal consistency or item redundancy in psychometric scales? Personality and individual differences. 1991;12(3):291-4.
17. Ferketich S. Focus on psychometrics. Internal consistency estimates of reliability. Res Nurs Health. 1990;13(6):437-40.
18. Green D, Charman T, Pickles A, Chandler S, Loucas T, Simonoff E, et al. Impairment in movement skills of children with autistic spectrum disorders. Dev Med Child Neurol. 2009;51(4):311-6.
19. Brown C, Tollefson N, Dunn W, Cromwell R, Filion D. The adult sensory profile: Measuring patterns of sensory processing. Am J Occup Ther .2001; 55(1): 75-82.
20. Lane AE, Young RL, Baker AE, Angley MT. Sensory processing subtypes in autism: association with adaptive behavior. J Autism Dev Disord. 2010;40(1):112-22.
21. Dove S, Dunn W. Sensory processing in students with specific learning disabilities: Findings and implications for assessment and intervention planning. Journal of Occupational Therapy, Schools, & Early Intervention. 2008;1(2):116-27.
IssueVol 16 No 3 (2021) QRcode
SectionOriginal Article(s)
DOI https://doi.org/10.18502/ijps.v16i3.6262
Autism Spectrum Disorder Psychometric Learning Disabilities

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
How to Cite
Mirzakhani N, Rezaee M, Alizadeh Zarei M, Mahmoudi E, Rayegani SM, Shahbazi M, Haddadiniya A. Internal Consistency and Item Analysis of the Persian Version of the Child Sensory Profile 2 in Vulnerable Populations. Iran J Psychiatry. 2021;16(3):353-361.