Journals / Eğitimde ve Psikolojide Ölçme ve Değerlendirme Dergisi / 2017 / Cilt: 8 - Sayı: 1

Exploring Variability Sources in Student Evaluation of Teaching via Many-Facet Rasch Model

Ders Değerlendirme Anketinde Varyans Kaynaklarının Çok Yüzeyli Rasch Modeliyle Değerlendirilmesi

Pages
15–33
Publication Date
2022-10-12
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The results show that a) students greatly differ in the severity while rating instructors, b) students were fairly consistent in their ratings, c) students as a group and individual level are tend to display halo effect in their ratings, d) students are clustered at the highest two categories of the scale and e) the variation in item measures is fairly low.

📌 3 Key Takeaways

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Objective & Hypothesis:Evaluating quality of teaching is important in nearly every higher education institute.
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Key Findings & Data:Student Evaluation of Teaching (SET) is used to gather information about students’ experiences with a course and instructor’s performance at some point of semester.
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Conclusion & Impact:The results show that a) students greatly differ in the severity while rating instructors, b) students were fairly consistent in their ratings, c) students as a group and individual level are tend to display halo effect in their ratings, d) students are clustered at the highest two categories of the scale and e) the variation in item measures is fairly low.
🔬Design:Modeling & Simulation
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Evaluating quality of teaching is important in nearly every higher education institute. The most common way of assessing teaching effectiveness takes place through students. Student Evaluation of Teaching (SET) is used to gather information about students’ experiences with a course and instructor’s performance at some point of semester. SET can be considered as a type of rater mediated performance assessment where students are the raters and instructors are the examinees. When performance assessment becomes a rater mediated assessment process, extra measures need to be taken into consideration in order to create more reliable and fair assessment practices. The study has two main purposes; (a) to examine the extent to which the facets (instructor, student, and rating items) contribute to instructors’ score variance and (b) to examine the students’ judging behavior in order to detect any potential source of bias in student evaluation of teaching by using the Many-Facet Rasch Model. The data set includes one thousand 235 students’ responses from 254 courses. The results show that a) students greatly differ in the severity while rating instructors, b) students were fairly consistent in their ratings, c) students as a group and individual level are tend to display halo effect in their ratings, d) students are clustered at the highest two categories of the scale and e) the variation in item measures is fairly low. The findings have practical implications for the SET practices by improving the psychometric quality of measurement

Özet

Öğretim niteliğini değerlendirmek neredeyse her yükseköğretim kurumlarında önemlidir. Öğretimin etkinliğini değerlendirmenin en yaygın yöntemi öğrenciler üzerinden gerçekleştirilmektedir. Ders değerlendirme anketi (DDA) yoluyla dönemin herhangi bir zamanında öğrencilerin ders ve öğretim elemanı hakkındaki görüş ve tecrübelerine ilişkin bilgi toplanır. DDA, puanlayıcı aracılı bir tür performans değerlendirmesi olarak kabul edilebilir. Bu kez öğrenciler puanlayıcı, öğretim elemanları ise değerlendirilendir. Performans değerlendirme, bir puanlayıcı aracılı değerlendirme süreci olduğunda, ekstra önlemler, daha güvenilir ve adil bir değerlendirme uygulamaları oluşturmak için dikkate alınması gerekir. Bu çalışmanın amacı, a) öğretim elemanlarının puanlarındaki farklılığa/varyansa, puanlama sürecindeki yüzeylerin (öğretim elemanı, öğrenci ve değerlendirme maddeleri) ne derece katkı sağladığını ve b) öğrencilerin yaptiklari puanlamalarda yanlılığa yol açacak potansiyel kaynakları çok yüzeyli Rasch modeli yardımıyla incelemektir. Çalışmada kullanılan veri seti 254 dersten 1.235 öğrencinin değerlendirmelerini kapsamaktadır. Sonuçlara göre a) öğrenciler, öğretim elemanlarını değerlendirirken farklı katılık/cömertlik derecesi göstermektedirler, b) çoğu öğrenci kendi içinde oldukça tutarlı, c) grup olarak, değerlendirmelerde halo etkisi oldugu görülmektedir, d) öğrenciler beşli ölçeğin üst puanlarında kümelenmişlerdir, e) madde zorluk değerlenlerindeki varyasyon çok düşüktür. Bu bulguların, DDA'nin psikometrik özelliklerinin daha nitelikli hala getirilmesi yönünde sonuçları vardır ve bunlar makalede tartışılmıştır

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Cite This Article

BÖRKAN, B. (2022). Exploring Variability Sources in Student Evaluation of Teaching via Many-Facet Rasch Model. Eğitimde ve Psikolojide Ölçme ve Değerlendirme Dergisi, Cilt: 8 - Sayı: 1, 15–33. https://ajindex.com/articles/497221

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