Author/Authors :
AZIZI، ROYA نويسنده Department of Ergonomic, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran , , ZAKERIAN، SEYED ABOULFAZL نويسنده Department of Occupational Health, Tehran University of Medical Sciences, Tehran, Iran , , Rahgozar، Mehdi نويسنده Department of Statistical, Faculty of Statistical and Computer, Welfare & Rehabilitation Sciences University, Tehran, Iran Rahgozar, Mehdi
Abstract :
The term usability refers to a special index for success of an operating system. This study aimed to
determine the reliability and validity of the Software Usability Measurements Inventory (SUMI)
questionnaire as one of the valid and common questionnaires about usability evaluation. The back
translation method was used to translate the questionnaire from English to Persian back to English.
Moreover, repeatability or test-retest reliability was practically used to determine the reliability of the SUMI
questionnaire. The target population of the study consisted of all personnel of the governmental
organizations in the city of Tehran, Iran, from whom 29 persons participated in the study to fill out the
SUMI questionnaire. The Persian version of this questionnaire is available at designer’s data bases under
the title of IRSUMI_31. The obtained coefficients of reliability were 0.838 in testing step and 0.722 in retesting
step, respectively. The coefficients represented a satisfactory proof for the content validity and
reliability of the questionnaire. The Persian version of SUMI questionnaire is applicable for all domestic
made software as a valid and applicable factor.
