Let us discuss three potential barriers to voluntariness: (1) literal coercion, (2) "undue inducement", and (3) "no choice" situations.
The design thereby obtained provided 12 choice situations.
We employed a DCE technique with eight pairwise choice situations, each with six characteristics.
They present individuals with hypothetical choice situations and enable several responses for each one.
Feed-specific aspects include the form and number of experimental feeds offered in choice situations.
This literature examines the challenging choice situations and problematic preference structures that can prompt dynamic choice problems.
But in real interactive choice situations, agents must often rely on their subjective estimations or perceptions of probabilities.
The way choice situations were shown to participants depends on the habitual trip revealed in the RP questionnaire: If respondents did not usually transfer, they were given 6 simple choice situations between 0 and 1 transfer.
The main focus has been on the multinomial logit model, however this model is unable to take the dependency between choice situations into account, while in a stated choice survey usually multiple choice situations are presented to a single respondent.
20% and 80% of participants chose the no-transfer and one-transfer options respectively in the SP choice situations.
Caussade et al. [25] showed that setting between 6 and 13 choice situations minimizes the error variance of the estimates.
