Behavioural experiment included in: Van der Schans, K.L., Kiggen, M., Tziafetas, K., Holland, R.W., & Karremans, J.C. (2022)
Participants are asked to partake in an Ultimatum Game. Participants receive the offer of 1 out of 20 through 10 out of 20 credits split (randomized). Participants are asked how they feel about each offer and to either accept or reject the offer (see paper for more detailed descriptions). Afterwards participants fill out questionnaires regarding their trait mindfulness and other personality characteristics that lay outside the scope of the paper.
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Five facets mindfulness questionnaire (Baer et al., 2006). This questionnaire measures participants trait mindfulness.
Gorilla Open Materials Attribution-NonCommerical Research-Only
Built with Questionnaire Builder 1
Gorilla Open Materials Attribution-NonCommerical Research-Only
Built with Questionnaire Builder 1
Gorilla Open Materials Attribution-NonCommerical Research-Only
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This is the overarching experiment tree calling all other questionnaires and tasks.
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Participants played ten rounds of the Ultimatum Game (Güth et al., 1983). They were told that they were playing against other participants online and that by a random draw they were in the position of the receiver. In reality, the proposals were a predetermined and a randomized set of splits of twenty credits (1:19, 2:18, 3:17, 4:16, 5:15, 6:14, 7:13, 8:12, 9:11, 10:10 of which the first number was offered towards the participant). Within each trial, participants were offered one of these splits, and asked whether they accepted or rejected this offer (see Figure 1). Participants were told that if they accepted the offer, both parties received the proposed credits; if they rejected the offer, both parties received nothing.
In this version of the Ultimatum Game, to examine emotional responses to fairness of the offers, after each offer, participants were first asked how they felt about this offer, followed by the question whether they accepted or rejected this offer.
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