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ERIC Number: EJ1014063
Record Type: Journal
Publication Date: 2013-Dec
Pages: 20
Abstractor: As Provided
ISSN: ISSN-1539-1515
Development of the Newtonian Gravity Concept Inventory
Williamson, Kathryn E.; Willoughby, Shannon; Prather, Edward E.
Astronomy Education Review, v12 n1 p010107-1--010107-20 Dec 2013
We introduce the Newtonian Gravity Concept Inventory (NGCI), a 26-item multiple-choice instrument to assess introductory general education college astronomy ("Astro 101") student understanding of Newtonian gravity. This paper describes the development of the NGCI through four phases: Planning, Construction, Quantitative Analysis, and Validation. We discuss the evolution of the instrument through three versions, including the refinement of a set of four concept domains and nine examples of items to illustrate how expert review, student interviews, and Classical Test Theory statistics informed our approach. We conclude that the NGCI is a reliable and valid instrument. (Contains 10 tables, 9 figures, and 1 note.)
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Publication Type: Journal Articles; Reports - Evaluative
Education Level: Higher Education; Postsecondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A