This paper aims at comparing the performance of three conjoint analyses (CA) in terms of estimated partworths, predictive power and estimated WTP: choice experiment (CE); ranking conjoint analysis (RCA) and best-worst scaling (BWS). Comparisons are made in a non-hypothetical setting. For...

Hypothetical bias is a pervasive problem in stated-preference experiments. Recent research has developed two empirically successful calibrations to remove hypothetical bias, though the calibrations have not been tested using the same data or in a conjoint analysis. This study compares the two...

Over the last few years a great deal of research has focussed on hypothetical bias in value estimates obtained with the contingent valuation (CV) method and on means for ameliorating if not eliminating such bias. To date, efforts to eliminate hypothetical bias have relied on calibration...

Parting from the issue which elicited value method best predict real consumer’ behavior, this study compares the ability of hypothetical and non-hypothetical choice experiment respect to incentive compatible ranking conjoint analysis and sequential best worst scaling in terms of estimated...

This paper reports results from a contingent valuation based public good experiment conducted in the African nation of Botswana. In a sample of university students, we find evidence that stated willingness to contribute to a public good in a hypothetical setting is higher than actual...

Hypothetical bias is one of the main issues bedeviling the field of nonmarket valuation. The general criticism is that survey responses reflect how people would like to behave, rather than how they actually behave. In our study of climate change and emissions reductions, we took advantage of the...

Over recent years there has been renewed interest in cost-benefit analysis (CBA) in health care but the ‘hypothetical bias’ concern (i.e. the belief that WTP values overstate real preferences) is a remaining anxiety. This paper reports new empirical data comparing hypothetical and real...

The extent to which Stated Choice (SC) experiments suffer from hypothetical bias continues to be a controversial topic in the literature. This research provides further evidence in this debate by examining the existence of hypothetical bias in a transport-related SC experiment. Data for this...