Research Article

Investigating Violations of Parametric Test Assumptions in Tourism Research

Number: Advanced Online Publication Early Pub Date: September 25, 2026
TR EN

Investigating Violations of Parametric Test Assumptions in Tourism Research

Abstract

Aim: This study evaluates the extent to which researchers adhere to parametric testing assumptions in quantitative studies published in SSCI-indexed tourism journals.

Method: Using document analysis, 239 empirical articles published between 2020 and 2024 in 19 journals were systematically reviewed with a focus on the statistical methods employed and on whether basic parametric assumptions were acknowledged, tested, and reported.

Results: The findings show a predominant use of SEM/CB-SEM and PLS-SEM. Data-type assumptions were mentioned in 94% of cases, whereas normality and sample-size assumptions were addressed far less frequently: only 43% of tests reported checking normality and 29% reported assessing sample size. Normality was not mentioned in 51% of tests and explicitly stated as “not needed” in 6%, while sample-size assumptions were not mentioned in 58% and claimed to be unnecessary in 13% of cases. When all parametric assumptions were considered together, only 24% of studies reported them comprehensively, whereas 57% did not mention them and 18% explicitly stated that such assumptions were not needed; all of these “not needed” cases employed PLS-SEM.

Conclusion: These results highlight a need for greater methodological rigor in tourism research and underscore the importance of systematically considering parametric assumptions to strengthen the validity and reliability of quantitative findings in the field.

Keywords

References

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Details

Primary Language

English

Subjects

Sociological Methodology and Research Methods

Journal Section

Research Article

Early Pub Date

September 25, 2026

Publication Date

-

Submission Date

July 11, 2025

Acceptance Date

December 15, 2025

Published in Issue

Year 2026 Number: Advanced Online Publication

APA
Eren, D., Özgül Katlav, E., & Aydın, Ş. (2026). Investigating Violations of Parametric Test Assumptions in Tourism Research. Istanbul Gelisim University Journal of Social Sciences, Advanced Online Publication, 493-503. https://doi.org/10.17336/igusbd.1740417
AMA
1.Eren D, Özgül Katlav E, Aydın Ş. Investigating Violations of Parametric Test Assumptions in Tourism Research. IGUJSS. 2026;(Advanced Online Publication):493-503. doi:10.17336/igusbd.1740417
Chicago
Eren, Duygu, Eda Özgül Katlav, and Şule Aydın. 2026. “Investigating Violations of Parametric Test Assumptions in Tourism Research”. Istanbul Gelisim University Journal of Social Sciences, no. Advanced Online Publication: 493-503. https://doi.org/10.17336/igusbd.1740417.
EndNote
Eren D, Özgül Katlav E, Aydın Ş (September 1, 2026) Investigating Violations of Parametric Test Assumptions in Tourism Research. Istanbul Gelisim University Journal of Social Sciences Advanced Online Publication 493–503.
IEEE
[1]D. Eren, E. Özgül Katlav, and Ş. Aydın, “Investigating Violations of Parametric Test Assumptions in Tourism Research”, IGUJSS, no. Advanced Online Publication, pp. 493–503, Sept. 2026, doi: 10.17336/igusbd.1740417.
ISNAD
Eren, Duygu - Özgül Katlav, Eda - Aydın, Şule. “Investigating Violations of Parametric Test Assumptions in Tourism Research”. Istanbul Gelisim University Journal of Social Sciences. Advanced Online Publication (September 1, 2026): 493-503. https://doi.org/10.17336/igusbd.1740417.
JAMA
1.Eren D, Özgül Katlav E, Aydın Ş. Investigating Violations of Parametric Test Assumptions in Tourism Research. IGUJSS. 2026;:493–503.
MLA
Eren, Duygu, et al. “Investigating Violations of Parametric Test Assumptions in Tourism Research”. Istanbul Gelisim University Journal of Social Sciences, no. Advanced Online Publication, Sept. 2026, pp. 493-0, doi:10.17336/igusbd.1740417.
Vancouver
1.Duygu Eren, Eda Özgül Katlav, Şule Aydın. Investigating Violations of Parametric Test Assumptions in Tourism Research. IGUJSS. 2026 Sep. 1;(Advanced Online Publication):493-50. doi:10.17336/igusbd.1740417

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