This deserves to be read, re-read, re-re-read, and taken to heart. The ASA makes their statement on p-values.Some key points:p-values by themselves offer very little information on the utility of a model, the truth of a statement, or what is behind a d...
![MCMSki IV [day 3]](http://xianblog.files.wordpress.com/2014/01/ridge5.jpg?w=450&h=302)
Already on the final day..! And still this frustration in being unable to attend three sessions at once… Andrew Gelman started the day with a non-computational talk that broached on themes that are familiar to readers of his blog, on the misuse of significance tests and on recommendations for better practice. I then picked the […]
This blog post was written for undergraduate research methods teaching. I have therefore tried to keep everything relatively simple and equation-free. The content is based loosely on more detailed material in my book Serious stats. What are collineari...
This article from my other blog may be of interest to readers of this blog: http://seriousstats.wordpress.com/2013/04/18/using-multilevel-models-to-get-accurate-inferences-for-repeated-measures-anova-designs/
I wasn't going to post on this ... but couldn't resist. A recent QJEP paper reports suspicious patterns in p values across three psychology journals. This has been blogged elsewhere (see here and here), so I haven't got too much to add. Although ...
I wasn't going to post on this ... but couldn't resist. A recent QJEP paper reports suspicious patterns in p values across three psychology journals.This has been blogged elsewhere (see here and here), so I haven't got too much to add. Although I ...
... or to be more precise, what's up with experimental social psychology?A number of high profile cases of suspected (in some cases admitted) fraud have been highlighted in psychology recently - my own discipline - but they've (nearly all arisen in exp...
I've been thinking about p values quite a bit recently - prompted by a other bloggers and by some journal work. One interesting phenomenon in this area is the cliff effect: a supposed abrupt shift in researchers' confidence in an effect when moving fro...
This is a quick follow up to my earlier post that discussed how to graph CIs for within-subjects (repeated measures) ANOVA designs. My forthcoming book Serious stats describes how to do this for between-subjects designs (a much simpler proble...
I finally found some time to take a closer look at p curves. I haven't had a chance to follow-up my simulations (and probably won't for a few weeks if not months), but I have had time to think through the ideas the p curve approach raises based on some...
