Blog Archives

Cronbach to the future

August 6, 2013
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One fascinating thing about working in the area of psychological statistics is how hard it is to move people away from reliance on bad, inefficient or otherwise problematic methods. My own view - informed to some extent by the literature, by experience and by anecdote is that it isn't sufficient merely to establish than the standard approach is wrong....

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Serious stats: using multilevel models to get accurate inferences for repeated measures ANOVA

June 13, 2013
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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/

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Guest post: Visualizing data using a 3D printer

September 25, 2012
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Guest post: Visualizing data using a 3D printer

In a break from my usual obsessions and interests here is a guest blog post by Ian Walker. I'm posting it because I think it is rather cool and hope it will be of interest to some of my regular readers. Ian is perhaps best known (in the blogosphere) f...

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The stimuli-as-fixed-effect fallacy

June 21, 2012
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Neuroskeptic has just blogged on a new paper by Judd, Westfall and Kenny on Treating stimuli as a random factor in social psychology: A new and comprehensive solution to a pervasive but largely ignored problem. I can't access the original pap...

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The aesthetics of error bars

May 27, 2012
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The aesthetics of error bars

This blog and my other main blog (the companion blog for my book) are now syndicated via R-bloggers (posts tagged R only) and statsblogs.com. The latter is a relatively new blog aggregator but looks to have some interesting content. R-bloggers it quite...

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Serious stats – free statistics resources

March 23, 2012
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The companion web site for Serious Stats is now live:http://www.palgrave.com/psychology/baguley/The web site includes:- a free sample chapter (Chapter 15: Contrasts)- data sets- R scripts- 5 online supplements (for meta-analysis, multiple imputation, r...

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Graphing between-subject confidence intervals for ANOVA

March 19, 2012
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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...

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p curves revisited

March 15, 2012
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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 of the comments I've received and a brief exchange...

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R code for p curves

March 14, 2012
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I have finally got around to posting the R code for my p curve simulation. Those familiar with R will realize how crude it is (I've been caught up with other urgent stuff and had no time to explore further).You are welcome to play with (and improve!) t...

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Simulating p curves and detecting dodgy stats

February 16, 2012
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Simulating p curves and detecting dodgy stats

Psych your mind has an interesting blog post on using p curves to detect dodgy stats in a a volume of published work (e.g., for a researcher or journal). The idea apparently comes from Uri Simonsohn (one of the authors of a recent paper on dodgy s...

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