About Me


Dr. Sahin holds a Ph.D. degree in educational measurement and evaluation. He has extensive experience in English language testing, Item Response Theory applications and Computerized Adaptive Tests. His current research interests are the minimum feasible sample sizes in IRT based item and person parameter estimation, Computerized Adaptive Tests, and assessing writing. 

If you need help in developing an computerized adaptive test or in mastering Item response theory, feel free to contact Dr. Sahin via alpersahin2@yahoo.com .For further details please visit his linkedin profile.                                                               


                                                                                                             

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