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Rasch analysis of a collection of Astronomy items

Athanasios Verdis; Spyridon Kokkotas; Evi Panou

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{
  "publisher": "Zenodo", 
  "DOI": "10.5281/zenodo.1469846", 
  "language": "ell", 
  "title": "Rasch analysis of a collection of Astronomy items", 
  "issued": {
    "date-parts": [
      [
        2018, 
        10, 
        24
      ]
    ]
  }, 
  "abstract": "<p>This paper examines how Rasch analysis and Principal Components Analysis have been used complementarily in the evaluation of an astronomy course. Twelve dichotomous items were presented to 134 secondary school students in Greece. The items evaluated a STEM project, with emphasis on its Astronomy component. Nonlinear Principal Components analysis and Rasch analysis are compared regarding the issue of unidimensionality. It is argued that non-linear Principal Component Analysis offers safer criteria for suggesting unidimensionality but at the same time Rasch&nbsp;analysis&nbsp;provides more information regarding items&rsquo; difficulty and participants&rsquo; ability.</p>", 
  "author": [
    {
      "family": "Athanasios Verdis"
    }, 
    {
      "family": "Spyridon Kokkotas"
    }, 
    {
      "family": "Evi Panou"
    }
  ], 
  "type": "speech", 
  "id": "1469846"
}
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Publication date:
October 24, 2018
DOI:
10.5281/zenodo.1469846

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Keyword(s):
Astronomy STEM Rasch analysis
Grants:
European Commission:
  • STEM4youth - Promotion of STEM education by key scientific challenges and their impact on our life and career perspectives (710577)
Meeting:
2nd Conference of the Hellenic Association for Educational Assessment (ELETEA), Athens, Greece, 11-13 May, 2018
License (for files):
Creative Commons Attribution 4.0 International

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Version 1 10.5281/zenodo.1469846 Oct 24, 2018
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