I have the following conceptual model:
IV: Personality trait (measured on likert scale)
Moderator: low trust vs high trust
DV: initial price offer in a negotiation ( values can be between 5-15)
I have a within-subjects design, so first i assessed the personality of the respondent, then each respondent was asked to input an offer given the scenario (scenario1: low trust towards their negotiation partner). Then in a secod scenario (scenario2: higher trust towards their negotiation partner) they had to input a second offer.
I want to measure the effect of personality on the initial offer and how this relationship is moderated by the level of trust.
What analysis should I use in SPSS to account for the moderation effect but also for the repeated measures?
my coach is suggesting mixed-effect model but i am not familiar what it is.
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