David Draper on “Bayesian Model Specification: Toward a Theory of Applied...
David Draper’s talk, “Bayesian Model Specification: Toward a Theory of Applied Statistics,” at the Harrington Fellow Symposium this past Friday was very good. His (extensive) slides are available...
View ArticleReplications Buzz Part I
There’s been some buzz in the popular press the past month about the special issue of the journal Social Psychology devoted to registered replications. This is the first of at least two posts on some...
View ArticleReplications Buzz Part II
Two more popular press articles on replications have recently appeared: 1. Biological psychologist Pete Etchells had a May 28 Guardian article discussing some of the (sometimes vitriolic) discussion of...
View ArticleBeyond the Buzz on Replications Part I: Overview of Additional Issues, Choice...
OVERVIEW OF ADDITIONAL ISSUES Understandably, the popular press can’t be expected to go into much detail in discussing the issues involved in quality and replication of scientific findings. Although...
View ArticleBEYOND THE BUZZ PART II: Model Assumptions and Robustness
This is the second in a series of posts discussing concerns that arose in reading two of the papers in the special issue of Social Psychology on Registered Replications. (The first was here; this one...
View ArticleBeyond the Buzz Part III: More on Model Assumptions
My last post discussed the importance of model assumptions in using hypothesis tests, and the potential difficulties in checking them. This post will focus on what can (and should) be done to check...
View ArticleBeyond the Buzz Part IV: Multiple Testing
In his June 10 Guardian article , Chris Chambers gave a link to an article discussing “questionable research practices” that are common in psychology research. One practice omitted from that article,...
View ArticleBeyond The Buzz Part V: Power and Cohen
This is a continuation of a series of posts on common missteps in statistical practice, prompted by the recent special issue of Social Psychology featuring registered replications. As with the previous...
View ArticleBeyond The Buzz Part VI: Better ways of calculating power and sample size
In the last post, I commented on how Cohen’s 1992 paper1 moved psychology research from ignoring power to using a simplified method proposed by Cohen for determining sample size to obtain some levels...
View ArticleBeyond The Buzz Part VII: Practical vs Statistical Significance and...
As mentioned in several of the previous posts in this series, the comments I make in this post are not intended, and should not be construed, as singling out for criticism the authors of any papers...
View ArticleBeyond the Buzz Part VIII: Outliers
Most of my posts so far in the Beyond the Buzz series have been more critical than positive, so I’m happy to post about a couple of things that are strongly positive. Both stem from Monday’s SPSP* blog...
View ArticleFrom the New Book Shelf, Summer 2014
Comments on two books I saw on the new bookshelf in the past few months: I. Bartholomew, David J., Unobserved Variables: Models and Misunderstandings, Springer Briefs, 2013 This is a delightful little...
View ArticleSome Much Needed Attention to Multiple Testing in the Psychology Literature
In several earlier posts (A Mixed Bag, , More re Simmons et al, Part I, More re Simmons et al, Part II, More re Simons et al, Part III, Though Many Social Psychologists May Be Unaware, Multiple...
View ArticleMore on Teaching for Reproducibility
A few months ago, I mentioned efforts to teach for reproducibility in intro stats courses. Today, the comments in Andrew Gelman’s blog post had a link to a course (taught by University of Wisconsin...
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Another Mixed Bag: Gigerenzer’s Mindless Statistics
I recently saw a link on Andrew Gelman’s blog to a blog post by John Kruske that had a link to Gerd Gigerenzer’s 2004 paper Mindless Statistics, which I had not seen before. As the title of this post...
View ArticleIn Memorium: Peter W. M. John, 1923 – 2015
Peter John, Professor Emeritus of Mathematics at the University of Texas at Austin, passed away peacefully in his home in Austin on January 22, 2015. As he wished, there was no memorial service. An...
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