Testing moderation effects using non-parametric regressions

George Assaf, A. and Tsionas, M.G. and Andrikopoulos, A. (2020) Testing moderation effects using non-parametric regressions. International Journal of Hospitality Management, 86. ISSN 0278-4319

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Testing moderation effects is highly common in the hospitality literature. Most theories in the field depend on variables that alter the nature and direction of the relationship between two variables. While moderation continues to be heavily used, methods for testing moderation effects are not always robust. One common problem that researchers often face is the need to pre-assign a particular functional form. The aim of this note is to address this problem. We describe three different non-parametric models that offer more flexibility in testing moderating effects without a need to pre-impose a specific functional form. We test the three models on an interesting application involving the moderating role of corporate social responsibility (CSR) on the relationship between advertising and firm value. The results revealed interesting moderating effects that go beyond the simple linear moderation.

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Journal Article
Journal or Publication Title:
International Journal of Hospitality Management
Additional Information:
This is the author’s version of a work that was accepted for publication in International Journal of Hospitality Management. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Journal of Hospitality Management, 86, 2020 DOI: 10.1016/j.ijhm.2019.102441
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28 Jan 2020 12:00
Last Modified:
22 Nov 2022 08:40