en پژوهشي Original Research Articles <p dir="ltr" style="text-align: justify;"><strong>Objectives:</strong> The purpose of this study was to develop an Iranian Hand writing Speed Test (I-CHST) for testing of Iranian students aged 8-12. To date, no&nbsp; norms of handwriting speed have been published for hand-writing speed of the Iranian students.</p> <p dir="ltr" style="text-align: justify;"><strong>Methods:</strong> A sample of 400 typically developing Iranian students across four age cohorts was recruited. Among those 400 students 50% were girls and 50%&nbsp; were boys. 73% were studding at government schools and 27% were from the private schools. 79% were right handed and 11% were left handed. The results showed that the handwriting speed assessment test has excellent inter-rater reliability (r=1, P=0.000) and construct validity (r=0.798, P=0.000).</p> <p dir="ltr" style="text-align: justify;"><strong>Results:</strong> The findings showed that handwriting speed increases with age and the rate of increase was found to be greatest among Iranian children aged 8-12. It is also found that the girls aged 11-12 wrote faster than boys of the same age.</p> <p dir="ltr" style="text-align: justify;"><strong>Discussion:</strong> Based on this research, I-CHST was a valid and reliable test for testing the hand writing speed in Iranian children and it could be used for testing or intervention purposes by the therapists at clinics.</p> Handwriting speed, Typically developing Children, Occupational therapy, Test development 94 102 http://irj.uswr.ac.ir/browse.php?a_code=A-10-416-1&slc_lang=en&sid=1 Navid Mirzakhani mirzakhany@sbmu.ac.ir Yes Department Occupational Therapy, Faculty of Rehabilitation Science, Shahid Beheshti University of Medical Science, Tehran, Iran. Negar Miri-Lavasani nlavasan@deakin.edu.au No Department of Health and Social Development, Faculty of Health, Deakin University, Geelong, Australia. Atieh Javantash aj_ot83@yahoo.com No Department Occupational Therapy, Faculty of Rehabilitation Science, Shahid Beheshti University of Medical Science, Tehran, Iran. Rama Yasaei ryasaei@yahoo.com No American University of Antigua Medical School, San Francisco, USA. Zahra Pashazadeh zahrapashazadehazari@gmail.com No Department Occupational Therapy, Faculty of Rehabilitation Science, Shahid Beheshti University of Medical Science, Tehran, Iran.