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Structural equations modeling: Fit Indices, sample size, and advanced topics
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This article is the second of two parts intended to serve as a primer for structural equations models for the behavioral researcher. The first article introduced the basics: the measurement model, the structural model, and the combined, full structural equations model. In this second article, advanced issues are addressed, including fit indices and sample size, moderators, longitudinal data, mediation, and so forth.
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“The results in Figure 1 suggested excellent model fit (Iacobucci 2010: p. 91): χ 2 (32) = 97.994(p=0.000); and χ 2 /df = 3.06.Further, GFI = .968;CFI = .984;RMSEA = .061;and SRMR = .0278;thus corroborating the excellent model fit to the data”
From Consumer Brand Engagement in Social Media: Conceptualization, Scale Development and Validation (2014) · cites this paper as Iacobucci 2010
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“To indicate a good model fit (Hooper et al., 2007; Iacobucci, 2010), the χ 2 / df should not exceed 3; the robust CFI and TLI should be 0.90 or higher; and the RMSEA and SRMR should not exceed 0.08.”
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“While various recommendations exist for determining sample size in SEM studies (Gefen et al., 2000; Boomsma and Hoogland, 2001; Hoe, 2008; Iacobucci, 2010), we determined 24 free parameters in this study and a minimum sample size of 120 mother–infant dyads.”
MethodSaini, A., Kumar, A., Mishra, S. K., Kar, S. K., & Bansal, R. (2023) · Environment Development and Sustainability · doi:10.1007/s10668-023-02941-7 · Cited by 19
“Moreover, it is essential to authenticate the sample size required to develop a good structural model (Iacobucci, 2010).”
Viseu, J. N. R., Guerreiro, S., de Jesús, S. N., & Pinto, P. S. L. G. D. S. (2022) · Journal of Human Resources in Hospitality & Tourism · doi:10.1080/15332845.2023.2154035 · Cited by 15
Digital rehabilitation for hand and wrist pain: a single-arm prospective longitudinal cohort study
Costa, F., Janela, D., Molinos, M., Moulder, R., Laíns, J., Francisco, G., Bento, V., Yanamadala, V., Cohen, S. P., & Correia, F. (2022) · PAIN Reports · doi:10.1097/pr9.0000000000001026 · Cited by 15
Schuurmans, I. K., Luik, A. I., de Maat, D. A., Hillegers, M. H. J., Ikram, M. A., & Cecil, C. A. M. (2022) · Child Development · doi:10.1111/cdev.13825 · Cited by 25
“The latent variable model showed a good model fit for both the prenatal and postnatal period (Iacobucci, 2010): prenatal model: chi- square statistics (χ2) (2) = 7.42, p = .024, standardized root mean square residual (SRMR) = .013, and comparative fit index (CFI) = .995.”
MethodInfluentialSun, D., Mao, Z., Zhang, X., Li, J. J., & Zhang, L. (2022) · Frontiers in Psychiatry · doi:10.3389/fpsyt.2022.914862 · Cited by 15
Optimistic Environmental Messaging Increases State Optimism and in vivo Pro-environmental Behavior
MacKinnon, M., Davis, A. C., & Arnocky, S. A. (2022) · Frontiers in Psychology · doi:10.3389/fpsyg.2022.856063 · Cited by 21
“Sample size was determined for the path analysis model based upon previous simulation studies which indicate that simple structural equation models, which path analysis falls under the umbrella of, with reliable measures, good fit indices, and limited missing data will converge with sample sizes around 100 (Iacobucci,…”
MethodPublic perception on COVID-19 vaccination intention
Zaid, Z., & Pratondo, K. (2021) · International Journal of Public Health Science (IJPHS) · doi:10.11591/ijphs.v10i4.20914 · Cited by 23
“Although the data is relatively small, because this research uses The partial least squares structural equation modeling (PLS-SEM) analysis, the number of sample data can work well [51].”
MethodEffect analysis of the driving factors of super-gentrification using structural equation modeling
Shi, J.-G., Duan, K.-F., Xu, Q., & Li, J. (2021) · PLoS ONE · doi:10.1371/journal.pone.0248265 · Cited by 15
“In addition, the model to be tested using SEM is not overly complex and source of data is very reliable in this study, so the sample size of 209 can be enough [80].”
MethodCzakon, W., Kawa, A., & Scott, S. (2020) · International Journal of Logistics Research and Applications · doi:10.1080/13675567.2019.1705260 · Cited by 15
The Preference for Moderation Scale
Drolet, A., Luce, M. F., Li, J., Rossi, B., & Hastie, R. (2020) · Journal of Consumer Research · doi:10.2139/ssrn.3642793 · Cited by 15
“Following Iacobucci (2009, 2010), we relied on the correlation matrices for the confirmatory factor analysis.”
MethodHorta, H., & Santos, J. M. (2019) · Quantitative Science Studies · doi:10.1162/qss_a_00017 · Cited by 17
“As Iacobucci (2010) states, “as N increases, χ2 blows up,” with quasiexponential gains in the χ2 statistic reached for sample sizes as low as 500.”
BackgroundFaster! More! Better! Drivers of upgrading among participants in extreme sports events
Raggiotto, F., Scarpi, D., & Mason, M. C. (2019) · Journal of Business Research · doi:10.1016/j.jbusres.2019.04.047 · Cited by 20
Haynie, J. J., Baur, J., Harris, J. N., Harris, S. G., & Moates, K. N. (2018) · Journal of Leadership & Organizational Studies · doi:10.1177/1548051818767394 · Cited by 25
Tunstall, H., Shortt, N., Niedzwiedz, C. L., Richardson, E. A., Mitchell, R., & Pearce, J. (2018) · Social Science & Medicine (1967) · doi:10.1016/j.socscimed.2017.11.046 · Cited by 15
“In addition, only the models with the smallest sample 2 size ( 600), brand name knowledge and cigarette price among current smokers, met the χ2/d.f. 3 threshold, which is also sensitive to sample size (Iacobucci, 2010).”
BackgroundDifferences in Residential Energy Use between US City and Suburban Households
Estiri, H. (2016) · Regional Studies · doi:10.1080/00343404.2015.1079310 · Cited by 15
Understanding Brand Equity in Campus Recreational Sports: A Consumer-Based Perspective
Mills, I., & Williams, A. S. (2016) · doi:10.1123/rsj.2015-0019 · Cited by 15
“In addition, it has been recommended that using the ratio of N to the number of free parameters in a model can provide an adequate sample size for factor analysis and structural equation modeling (Bentler & Chou, 1987; Iacobucci, 2010; Myers, Ahn, & Jin, 2011).”
BackgroundMethodWhitson, M. L., & Connell, C. M. (2016) · American Journal of Community Psychology · doi:10.1002/ajcp.12058 · Cited by 17
Farina, N., Tabet, N., & Rusted, J. (2016) · Neuropsychology, development, and cognition. Section B, Aging, neuropsychology and cognition · doi:10.1080/13825585.2015.1080213 · Cited by 15
Household Energy Consumption and Housing Choice in the U.S. Residential Sector
Estiri, H. (2016) · Housing Policy Debate · doi:10.1080/10511482.2015.1045388 · Cited by 15
“SEM is a progression from factor analysis, ANOVA, and regression (Byrne, 1998; Iacobucci, 2010; Lei & Wu, 2007), which allows the measurement of complex relationships between a set of independent and dependent variables (Hoyle, 2012).”
BackgroundMethodInfluentialLessons from the global financial crisis for the semiconductor industry
Wu, C.-H., Ding, C. G., Jane, T. D., Lin, H.-R., & Wu, C.-Y. (2015) · doi:10.1016/j.techfore.2015.06.036 · Cited by 15
A Note on Service Switching: Evidence From Cloud Storage Services
Goode, S. (2015) · Services Marketing Quarterly · doi:10.1080/15332969.2015.1014240 · Cited by 13
“PLS is a common multivariate analytical approach, and is robust to sample size and distributional assumptions of the underlying variables (Iacobucci, 2010).”
BackgroundA succinct rating scale for radiology report quality
Yang, C., Kasales, C. J., Ouyang, T., Peterson, C., Sarwani, N., Tappouni, R., & Bruno, M. A. (2014) · SAGE Open Medicine · doi:10.1177/2050312114563101 · Cited by 15
Metadata
- Authors
- Iacobucci, D.
- Affiliations
- Vanderbilt University (US)
- Corresponding author
- Iacobucci, Dawn
- ORCID
- Iacobucci, Dawn
- Venue
- Journal of Consumer Psychology
- Publisher
- Wiley
- Published
- 2009-10-03
- Volume
- 20
- Issue
- 1
- Pages
- 90-98
- ISSN
- 1057-7408 (ISSN-L)
- 1532-7663
- OpenAlex
- W2038318317
- Cited by
- 2,263
- References
- 0
- Citations by year
- 2026: 111 · 2025: 193 · 2024: 193 · 2023: 186 · 2022: 210 · 2021: 208 · 2020: 158 · 2019: 193 · 2018: 169 · 2017: 129 · 2016: 128 · 2015: 123 · 2014: 94 · 2013: 86 · 2012: 53
- FWCI
- 34.78
- Type
- journal article
- Language
- en
- Open access
- green
- papers.ssrn.com
- Locations
- Journal of Consumer Psychology (publishedVersion)
- SSRN Electronic Journal (submittedVersion)
- Topics
- Social Sciences › Decision Sciences › Management Science and Operations Research › Psychometric Methodologies and Testing
- Physical Sciences › Mathematics › Statistics and Probability › Statistical Methods and Bayesian Inference
- Physical Sciences › Mathematics › Statistics and Probability › Statistical Methods and Applications
- Keywords
- structural equation modeling, model fit indices, sample size, moderators, longitudinal data, mediation, measurement model, structural model
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