Question about BF and sample size.
Hi, I have a question regarding increasing participants numbers and the associated BF that I was hoping someone could help me with.
We have two studies, one with approximately 200 participants and one with 400 participants. When running a Bayesian contingency table on the data, we find that the BF for the first study is larger than for the second study (BF ~ 4.2 reduces to BF ~ 3.2). As the two designs are very similar, we combined the data set, and the Bayes Factor reduces even further (BF ~ 1.6).
Is this simply because as we increase the sample number, we're getting a better estimate true distrubtion, and our BF is changing to reflect that? Or is there something else that might be causing this?
Thanks for your help.