Voluntary, or coerced? Four items measure whether a reviewer felt pushed by a company to write their review.
7-point Likert (1=strongly disagree, 7=strongly agree)
Garnefeld, I., Krah, T., Böhm, E., & Gremler, D.D. (2021). Online Reviews Generated through Product Testing: Can More Favorable Reviews Be Enticed with Free Products?. Journal of the Academy of Marketing Science, 49(4), 703–722.
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