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Nathaniel Lasry, Steven Rosenfield, Helena Dedic, Ariel Dahan, and Orad Reshef
The Force Concept Inventory (FCI) has influenced the development of many research-based pedagogies. However, no data exists on the FCI's internal consistency or test-retest reliability. The FCI was administered twice to one hundred students during the first week of classes in an electricity and magnetism course with no review of mechanics between test administrations. High Kuder-Richardson reliability coefficient values, which estimate the average correlation of scores obtained on all possible halves of the test, suggest strong internal consistency. However, 31% of the responses changed from test to retest, suggesting weak reliability for individual questions. A chi-square analysis shows that change in responses was neither consistent nor completely random. The puzzling conclusion is that although individual FCI responses are not reliable, the FCI total score is highly reliable.
American Journal of Physics: Volume 79, Issue 9, Pages 909-912
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![]() <a href="https://www.compadre.org/portal/items/detail.cfm?ID=12080">Lasry, N, S. Rosenfield, H. Dedic, A. Dahan, and O. Reshef. "The puzzling reliability of the Force Concept Inventory." Am. J. Phys. 79, no. 9, (September 1, 2011): 909-912.</a>
![]() N. Lasry, S. Rosenfield, H. Dedic, A. Dahan, and O. Reshef, , Am. J. Phys. 79 (9), 909 (2011), WWW Document, (https://doi.org/10.1119/1.3602073).
![]() N. Lasry, S. Rosenfield, H. Dedic, A. Dahan, and O. Reshef, The puzzling reliability of the Force Concept Inventory, Am. J. Phys. 79 (9), 909 (2011), <https://doi.org/10.1119/1.3602073>.
![]() Lasry, N., Rosenfield, S., Dedic, H., Dahan, A., & Reshef, O. (2011, September 1). The puzzling reliability of the Force Concept Inventory. Am. J. Phys., 79(9), 909-912. Retrieved February 12, 2025, from https://doi.org/10.1119/1.3602073
![]() Lasry, N, S. Rosenfield, H. Dedic, A. Dahan, and O. Reshef. "The puzzling reliability of the Force Concept Inventory." Am. J. Phys. 79, no. 9, (September 1, 2011): 909-912, https://doi.org/10.1119/1.3602073 (accessed 12 February 2025).
![]() Lasry, Nathaniel, Steven Rosenfield, Helena Dedic, Ariel Dahan, and Orad Reshef. "The puzzling reliability of the Force Concept Inventory." Am. J. Phys. 79.9 (2011): 909-912. 12 Feb. 2025 <https://doi.org/10.1119/1.3602073>.
![]() @article{
Author = "Nathaniel Lasry and Steven Rosenfield and Helena Dedic and Ariel Dahan and Orad Reshef",
Title = {The puzzling reliability of the Force Concept Inventory},
Journal = {Am. J. Phys.},
Volume = {79},
Number = {9},
Pages = {909-912},
Month = {September},
Year = {2011}
}
![]() %A Nathaniel Lasry %A Steven Rosenfield %A Helena Dedic %A Ariel Dahan %A Orad Reshef %T The puzzling reliability of the Force Concept Inventory %J Am. J. Phys. %V 79 %N 9 %D September 1, 2011 %P 909-912 %U https://doi.org/10.1119/1.3602073 %O application/pdf ![]() %0 Journal Article %A Lasry, Nathaniel %A Rosenfield, Steven %A Dedic, Helena %A Dahan, Ariel %A Reshef, Orad %D September 1, 2011 %T The puzzling reliability of the Force Concept Inventory %J Am. J. Phys. %V 79 %N 9 %P 909-912 %8 September 1, 2011 %U https://doi.org/10.1119/1.3602073 Disclaimer: ComPADRE offers citation styles as a guide only. We cannot offer interpretations about citations as this is an automated procedure. Please refer to the style manuals in the Citation Source Information area for clarifications.
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