Calibration and validation of instruments measuring academic ability in physics using item response theory (Master thesis)

Καψάλας, Ιωάννης


Educational measurement typically aims at evaluating the abilities and knowledge of students in various fields such as mathematics, language, science, physics etc., using tests, questionnaires and other instruments. The aim of this thesis is to create valid instruments that measure the academic ability in mechanics through calibrating already used ones. An instrument that was used for similar purposes in other studies was analyzed separately for each category of the sample, by fitting the data into IRT models with the statistical software Stata 14. Based on the results of the analysis, a new instrument was created for each category, with only one exception, where this was not possible due to serious statistical problems. The four new instruments were distributed to a total of 489 subjects and subsequently they were analyzed in the same way, in order to examine their improvement. All of them appeared to be improved, each one at a different degree. In this way, it was once again highlighted how IRT can be of great importance at the development of instruments in the area of Physics research (and furthermore of educational research). The implementation of this theory can lead to more accurate measurement instruments and consequently to more accurate measurement and conclusions.
Institution and School/Department of submitter: Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών Αγωγής. Παιδαγωγικό Τμήμα Δημοτικής Εκπαίδευσης
Subject classification: Educational measurement
Keywords: Θεωρία απόκρισης ερωτήματος,Εκπαιδευτική μέτρηση,Επικύρωση ερωτηματολογίων,Έρευνα φυσικής,Item response theory,Educational measurement,Validation of instruments,Physics research
URI: http://olympias.lib.uoi.gr/jspui/handle/123456789/28155
Appears in Collections:Διατριβές Μεταπτυχιακής Έρευνας (Masters)

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