EJ
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- EJ
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I've asked our ANOVA expert to take a look at this as well
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Hi m.p., I would think it is identical to what lavaan expects (since the SEM module is basically a GUI for lavaan). I'll bring this to the attention of our SEM expert though. E.J.
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Hi Gaffiere, This happens because RM ANOVA is based on a numerical procedure. You can up the accuracy by increasing the samples under "Additional Options" -> "Numerical Accuracy". If you find it annoying to get slightly differ…
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Hi kszechy, Thanks for your question. Let me forward this to our SEM expert... Cheers, E.J.
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Hi Gary, In the output, if you click to expand the triangle next to "Mediation Analysis", you see the option "copy citations". See screenshot below. I've just done this and paste the relevant output here: Rosseel, Y. (2012). lava…
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Yes, I believe this is appropriate. E.J.
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Hi Kevin, I have not looked into this -- in general, it would be worthwhile to develop Bayesian equivalents for all those variants of frequentist ANOVA...but we are not quite there yet. Cheers, E.J.
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Dear Eliza, As far as ROPE is concerned: I have some issues with that analysis, in the sense that it depends crucially on the bounds of an interval and that it does not quantify evidence. So I personally do not believe it answers a relevant question…
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Hi Philip, JASP implements the JZS approach from Rouder et al., 2012, as implemented in the BayesFactor package. This is a more subtle approach than the BIC, although they are trying to estimate the same quantity. Cheers, E.J.
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I'll pass this question along... E.J.
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Hi Henryk, I am not 100% on what you want to accomplish. When you use the Cauchy prior, you simply stipulate it; nothing is calculated from data. Perhaps you want to use existing data to construct a prior? In that case, keep in mind that when you st…
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Hi Henryk, This is actually a difficult question. I'd be inclined to say "no", as the hypotheses are computed on different data. It seems to me that you need the BF for the interaction between congruency and red/green trials. So I'd model …
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Hi Carlo, The simplest way to combine the items is to compute a sum score. You can either do this in Excel (or Calc for instance) or, in JASP, you can use our "compute column" functionality. The JASP website offers help: go to https://jasp…
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Hi Emilie, Re. 1) You can see from the table that the summed posterior probability for the models that include the factor of interest is "1.000". In reality, that is not exactly true -- there must remain some sliver of posterior probabilit…
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Hi Pete, First and foremost, here is a thesis that summarizes some of this work: https://psyarxiv.com/s56mk Second, I was a little confused about how many conditions you have -- you say "This means I will do 12 comparisons, 6 for the young part…
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Hi kev_bague, JASP does not (yet) offer sequential analyses for ANOVA; the reason is that there are several BFs in play, and only one may be of interest. I guess we could show them all or ask the user to define the one that's of interest. Also, the …
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Thanks for your question. This is a pretty general one, but I can point you to: 1. A post at https://jasp-stats.org/2018/03/20/perform-network-analysis-jasp/ 2. A video at https://www.youtube.com/watch?v=KacSF0TzoPg&feature=youtu.be I am not sur…
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I'll ask around :-)
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Hi TJU, The next version of JASP includes a JAGS module. For most other Bayesian analyses, we use analytic expressions (whenever we can), BAS, or BayesFactor (two R packages). These use their own sampling methods, but that's often (not always) not M…
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Dear JDeBeer, Thanks Probably means that there are some text entries in some of the cells (e.g., "banana") and that makes it impossible, for instance, to compute a mean. Not sure -- probably the design is such that the model is not identif…
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It means that the data are not sufficiently diagnostic for the purpose of discriminating the models -- all models retain a non-negligible amount of posterior probability. E.J.
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Hi Gary, Here's a recent post on the topic: https://jasp-stats.org/2020/03/12/mediation-and-moderation-analysis-in-jasp/ Cheers, EJ
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Yes, the Bayesian ANOVA can also be applied to unbalanced designs, so this should not be a problem. Cheers, EJ
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Hi Mateus, Opinions differ. You could show them and indicate explicitly that these obtain under the assumption that there is an effect (an assumption that the data undercut). EJ
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Ah, I see the problem. You used the first row for headings, but JASP expects data there. So instead of "V2", we want "Age", and the column needs to start with "14" E.J.
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You need "rows fixed" then (as the rows denote the conditions) EJ
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Suppose you want to compare two proportions. Proportion 1: 0 successes out of 5 trials Proportion 2: 1 success out of 6 trials So: Successes Failures Condition 1 0 5…
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Update: it will be in the next release :-) E.J.
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Yes, it would be better to be able to change it. Can you make a GitHub request, perhaps? (see https://jasp-stats.org/2018/03/29/request-feature-report-bug-jasp/) E.J.
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Strange! Can you send the entire JASP file so I can see what's going on? Better still, can you submit this as a GitHub issue so the programming team can have a go? Cheers, E.J.