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American Journal of Physics
written by Kathryn E. Williamson, Edward E. Prather, and Shannon Willoughby
The study described here extends the applicability of the Newtonian Gravity Concept Inventory (NGCI) to college algebra-based physics classes, beyond the general education astronomy courses for which it was originally developed. The four conceptual domains probed by the NGCI (Directionality, Force Law, Independence of Other Forces, and Threshold) are well suited for investigating students' reasoning about gravity in both populations, making the NGCI a highly versatile instrument. Classical test theory statistical analysis with physics student responses pre-instruction (N?=?1,392) and post-instruction (N?=?929) from eight colleges and universities across the United States indicate that the NGCI is composed of items with appropriate difficulty and discrimination and is reliable for this population. Also, expert review and student interviews support the NGCI's validity for the physics population. Emergent similarities and differences in how physics students reason about gravity compared to astronomy students are discussed, as well as future directions for analyzing the instrument's item parameters across both populations.
American Journal of Physics: Volume 84, Issue 6, Pages 458-466
Subjects Levels Resource Types
Astronomy
- Astronomy Education
= Education Research
Classical Mechanics
- Gravity
Education Foundations
- Assessment
= Instruments
- Research Design & Methodology
= Data
= Evaluation
= Validity
- Sample Population
General Physics
- Physics Education Research
= Reform Replication
- Lower Undergraduate
- Reference Material
= Research study
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© 2016 American Association of Physics Teachers (AAPT)
DOI:
10.1119/1.4945347
Keywords:
NGCI reliability, NGCI validity
Record Creator:
Metadata instance created March 2, 2022 by Sam McKagan
Record Updated:
May 6, 2022 by Caroline Hall
Last Update
when Cataloged:
May 23, 2016
Other Collections:

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Record Link
AIP Format
K. Williamson, E. Prather, and S. Willoughby, , Am. J. Phys. 84 (6), 458 (2016), WWW Document, (https://doi.org/10.1119/1.4945347).
AJP/PRST-PER
K. Williamson, E. Prather, and S. Willoughby, Applicability of the Newtonian gravity concept inventory to introductory college physics classes, Am. J. Phys. 84 (6), 458 (2016), <https://doi.org/10.1119/1.4945347>.
APA Format
Williamson, K., Prather, E., & Willoughby, S. (2016, May 23). Applicability of the Newtonian gravity concept inventory to introductory college physics classes. Am. J. Phys., 84(6), 458-466. Retrieved May 25, 2024, from https://doi.org/10.1119/1.4945347
Chicago Format
Williamson, K, E. Prather, and S. Willoughby. "Applicability of the Newtonian gravity concept inventory to introductory college physics classes." Am. J. Phys. 84, no. 6, (May 23, 2016): 458-466, https://doi.org/10.1119/1.4945347 (accessed 25 May 2024).
MLA Format
Williamson, Kathryn E., Edward Prather, and Shannon Willoughby. "Applicability of the Newtonian gravity concept inventory to introductory college physics classes." Am. J. Phys. 84.6 (2016): 458-466. 25 May 2024 <https://doi.org/10.1119/1.4945347>.
BibTeX Export Format
@article{ Author = "Kathryn E. Williamson and Edward Prather and Shannon Willoughby", Title = {Applicability of the Newtonian gravity concept inventory to introductory college physics classes}, Journal = {Am. J. Phys.}, Volume = {84}, Number = {6}, Pages = {458-466}, Month = {May}, Year = {2016} }
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%A Kathryn E. Williamson %A Edward Prather %A Shannon Willoughby %T Applicability of the Newtonian gravity concept inventory to introductory college physics classes %J Am. J. Phys. %V 84 %N 6 %D May 23, 2016 %P 458-466 %U https://doi.org/10.1119/1.4945347 %O text/html

EndNote Export Format

%0 Journal Article %A Williamson, Kathryn E. %A Prather, Edward %A Willoughby, Shannon %D May 23, 2016 %T Applicability of the Newtonian gravity concept inventory to introductory college physics classes %J Am. J. Phys. %V 84 %N 6 %P 458-466 %8 May 23, 2016 %U https://doi.org/10.1119/1.4945347


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