EJ
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- EJ
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Comments
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Yes. We generally use the BayesFactor package for t-tests, ANOVA, and regression. E.J.
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Can you upload an example? The new release will have label editing, but not (yet) on the y-axis, I think. Cheers, E.J.
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Hi Metaphid, My guess is that JASP is trying to be smart, and it assesses from the absolute size of the numbers what the number of decimal points should be. Maybe the number of decimal points should be an option. I'll add it to the to-do list. Che…
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Sometimes the BF is determined by numerical techniques (MCMC sampling, or numerical integration). These techniques come with uncertainty, and this is what the %error indicates. As a rule of thumb, I would start to worry when it exceeds about 5%, and…
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Hi Tom, Well, that's one way of doing it. You could also do comparisons to the simpler models, for instance instead of (a) you could compare "Group" to "Group x set size". If you want to average across all such possibilities you…
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Yes, that is exactly my preferred way of reporting the results! E.J.
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Sure but this makes sense, right? If you look at the mode, it should be near zero. But the median is the 50% cut-off point, so creating a one-sided test makes a big difference. So it is not unrealistically high. It is just that with a non-symmetric …
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Hi Moritz, I would apply the two-sided test and then toss out all the negative values for d. Cheers, E.J.
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Hi Jasper (great name, BTW) This is really a question for Richard Morey. You could try to private-message him perhaps. Cheers, E.J.
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Hi Dan, Well, "valid" indicates the number of valid responses (usually just the number of rows), and "missing" indicates the number of missing responses :-) (if some rows do not contain values in the relevant column). We are wo…
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Hi Tom, a) Yes there is a clear effect of group. No transitivity calculation needed b & c) for the interaction effects, I would note that the best supported model is the one that has both group and the group * set size interaction. BTW, I don't…
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I used an example data set and it used 4 decimal precision. Can you send a screenshot? E.J.
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Hi Tom, * " "So the data are almost 30 times more likely under the two factor model than under the model with only setsize"- please how do I interpret this in relation to the main effect of condition?" I am not sure what you wa…
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Correct. More specifically: (1) This is far away --it was always my intention to have this available, but programming limitations at the time JASP was designed made this too difficult. I pushed for it but there's only so much you can do. We will hav…
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Yes! The next version will have data editing through a "sync and update" option, but filtering will be a separate feature for a release in the near future. Cheers, E.J.
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Yes, just send the programmers the offending csv file and we'll sort it out. E.J.
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See also Part II here: https://osf.io/m6bi8/ E.J.
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Maybe you can the JASP programmers (through our GitHub page) your file, or else the first 10 rows or something. As an aside, if you open the CSV in another program (such as Excel), then it does work? This is important to know. E.J.
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Do your columns start with a variable name? E.J.
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Hi Perseus You won't get the BF10 from JASP. The BF10 from JASP is based on a specific set of priors; the implicit BF10 from the BIC is based on a different set of priors! Cheers, E.J.
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Hi Perseus, Yes, BIC is an approximation to the Bayes factor, and you can use the transformations shown in the blog to make that more clear. But there is no "single" Bayes factor -- the JZS approach can be viewed as just a somewhat more i…
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Hi Perseus, The Bayesian ANOVA is not computed from the classical ANOVA. Instead, the Bayesian ANOVA is obtained by applying the "Jeffreys Zellner Siow" framework developed in regression and the t-test to the case of ANOVA. An introductor…
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Hi Francesco, It is always a good idea to use Bayesian inference. But at the very least you can argue that the two paradigms are complementary, and it is counterproductive to ignore the Bayesian outcomes. So my advice is to heed the editor's advice…
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Right now the go-to paper is this one (Rouder & Morey: Default Bayes Factors for Model Selection in Regression): http://pcl.missouri.edu/sites/default/files/p_1.pdf Cheers, E.J.
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Hi Hanna, This is a great question. Some brief thoughts: 1. With BFs in between 1 and 3 you have not learned much with respect to the specific model-comparison question you were studying. with N=75, the posterior distribution will be relatively pea…
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Hi Vince, Ah that's too bad. I'm not sure how to proceed -- the JASP website lists the OS levels required. You could try running a windows emulator and installing JASP there. Not sure whether this will work -- if you have it working please let me k…
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Hi Andrew, This issue came up before I think. Let me pass this on to the JASP team member responsible for the nonparametric tests. Cheers, E.J.
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This test is not implemented in JASP or BayesFactor yet. There is some work on hypothesis testing in Bayesian GLMMs, but I'm not sure it is in a stage where it is implemented in a convenient software package. E.J.
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Hi Francesco, Completely correct! E.J.
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Hi Glenn, I'll forward this to the team member responsible for the classical ANOVA. I recall there was a discussion, but perhaps I misremember. E.J.