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Maintaining item banks with the Rasch model: an example from wave optics [Elektronski vir]Salibašić Glamočić, Džana ...Item banks are generally considered the basis of a new generation of educational measurement. In combination with specialized software, they can facilitate the computerized assembling of multiple ... preequated test forms. However, for advantages of item banks to become fully realized it is important that the item banks store a relatively large number of valid test items. In this paper, we demonstrate how the Rasch model is used for integrating new items into an existing wave optics item bank. First, we identified and applied a set of criteria for selecting 18 linking items from our initial item bank. In order to integrate 12 newly developed items, we combined the 18 linking items with the 12 newly developed ones into one test and administered this test to 106 postinstruction physics students from 4 universities in Slovenia, Croatia, and Bosnia and Herzegovina. It was determined that the 12 new items measure the same construct as items from the initial item bank. In addition, all items exhibited good item fit, item reliability was excellent and person reliability was fair. The ratio of standard deviations of linking item difficulties for the new test and existing item bank amounted to 0.89 and correlation of these difficulties amounted to 0.93 which indicated good linking precision. We could conclude that good linking precision can be obtained if linking items are chosen based on the following set of criteria: number of items, item fit, range and spacing of item difficulties, content representativeness, position in test form and interuniversity DIF contrasts.Vir: Physical review. Physics education research [Elektronski vir]. - ISSN 2469-9896 (Vol. 17, iss. 1, 2021, str. 010105-1-010105-18)Vrsta gradiva - e-članekLeto - 2021Jezik - angleškiCOBISS.SI-ID - 54415363
Avtor
Salibašić Glamočić, Džana |
Mešić, Vanes |
Neumann, Knut |
Sušac, Ana |
Boone, William J. |
Aviani, Ivica |
Hasović, Elvedin |
Erceg, Nataša |
Repnik, Robert |
Grubelnik, Vladimir
Teme
fizika |
valovna optika |
izobraževanje |
pedagoško raziskovanje |
statistika |
Raschev model |
physics |
wave optics |
education |
statistics |
Rasch model
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Salibašić Glamočić, Džana | ![]() |
Mešić, Vanes | ![]() |
Neumann, Knut | ![]() |
Sušac, Ana | ![]() |
Boone, William J. | ![]() |
Aviani, Ivica | ![]() |
Hasović, Elvedin | ![]() |
Erceg, Nataša | ![]() |
Repnik, Robert | 21815 |
Grubelnik, Vladimir | 21816 |
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