Now this thread ( ) seems relevant, but I can’t quite work out what to do… And my aim is to find out what my sample size should be for a replication sample to replicate this effect with 95% power. I find say that for psych 1 the 95% interval does not include zero. I have fitted in brms (a very simple non-hierarchical model): brm(formulat=behaviour ~ psych1 +psych2+psych3+ psych 4 + age+gender, The 4 psychological measures are correlated. I have 400 participants, for each I have 4 psychological measures (questionnaire scores) and 1 behavioural measure and some more covariates of no interest (age, gender). I think I was looking at this the wrong way. So I’ve had some other issues to iron about, but I’m now back at this.
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