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بررسی روایی صوری آزمون

دراین روش به جای توجه به آزمون به ویژگی های ظاهری آزمون توجه می شود و هنگامی برقرار می شود که فردی آزمون را بررسی کند و نتیجه بگیرد که آین آزمون صفت مورد نظر را اندازه گیری می کند. این فرد ممکن است یک آزمودنی یا یک متخصص باشد. اگرچه این نوع از روایی ضامن اندازه گیری دقیق نیست، ولی با انگیزش آزمودنی به پاسخگویی بر روایی نمرات حاصل از آزمون تاثیر دارد (سیف ، 1375). برای بررسی روایی صوری آزمون از نمرات تأثیر آیتماستفاده می شود.

همان طور که گفته شد برای بررسی روایی صوری از نظرات گروه نمونه هدف یا شرکت کنندگان تحقیق استفاده می شود و این قسمت از روایی آزمون نیازی به نظرات کارشناسان متخصص ندارد. برای بررسی نمرات تأثیر ابتدا از شرکت کنندگان خواسته می شود از تا میزان اهمیت هریک از گویه های پرسشنامه را در یک طیف لیکرتی 5 قسمتی از 1 (اصلا مهم نیست) تا 5 (کاملاً مهم است) مشخص نمایند. کاملاً مهم است (امتیاز 5)، مهم است (امتیاز 4)، به طور متوسطی مهم است (امتیاز 3)، اندکی مهم است (امتیاز 2)و اصلاً مهم نیست (امتیاز1).سپس نمرات تأثیر از طریق فرمول زیر محاسبه می شود:

اهمیت × فراوانی (به درصد)= نمره تأثیر

برای پذیرش روایی صوری هر گویه، نمره تأثیر آن نبایستی کمتر از 1/5 باشد و فقط سؤالاتی از لحاظ روایی صوری قابل قبول هستند که نمره آن ها بالاتر از 1/5 باشد.




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