The findings about WTP and the consumer surplus might be biased to some extent.
As mentioned in the literature review, there might be a strategic and hypothetical bias.
In the case of a strategic bias, the respondents would assume that stating a high WTP
would lead to an increase in the membership fee, which is not in their best interest.
Therefore, some respondents might have intentionally underestimated their WTP
(e.g., Rollins & Trotter, 1999–2000). In the case of a hypothetical bias, it would be
expected that the hypothetical WTP of this study would exceed the actual WTP of the
members. This would mean that members would not pay the maximum membership
fee they stated in the WTP question. As there is evidence for a hypothetical bias in previous
research (e.g., Loomis et al., 1996; Neill et al., 1994), this aspect has to be taken
into account when interpreting the results.
The findings about WTP and the consumer surplus might be biased to some extent.
As mentioned in the literature review, there might be a strategic and hypothetical bias.
In the case of a strategic bias, the respondents would assume that stating a high WTP
would lead to an increase in the membership fee, which is not in their best interest.
Therefore, some respondents might have intentionally underestimated their WTP
(e.g., Rollins & Trotter, 1999–2000). In the case of a hypothetical bias, it would be
expected that the hypothetical WTP of this study would exceed the actual WTP of the
members. This would mean that members would not pay the maximum membership
fee they stated in the WTP question. As there is evidence for a hypothetical bias in previous
research (e.g., Loomis et al., 1996; Neill et al., 1994), this aspect has to be taken
into account when interpreting the results.
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