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Professor Geoff Cumming Emeritus Professor, Psychology

I hope my statistics textbooks will change the world.

We simply must move on from statistical significance testing and p values to something better. I advocate estimation and meta-analysis, i.e. the new statistics. To see why, check out these two videos:
OR, at YouTube, search for "dance of the p values", and "significance roulette".

My most recent book is an introductory textbook that assumes no previous statistics knowledge. My co-author is Bob Calin-Jageman. The book takes an estimation approach from the start, and also introduces and explains Open Science--the new techniques needed to increase the replicability and trustworthiness of research. Later it explains statistical significance testing, and cautions about its problems. This is the first introductory statistics text that presents the new statistics (i.e., estimation and meta-analysis) and Open Science, and does so all through. It is the way of the future, that all students should be learning from now.

Cumming, G., & Calin-Jageman, R. (2017). Introduction to The New Statistics: Estimation, Open Science, and Beyond. New York: Routledge.

It was released in October 2016. Information, and download of the Contents, Preface, and Chapter 1, are available from the Publisher's website, at: http://tiny.cc/itnsroutledge  That first chapter is a very easy read, with no formulas, and is a quick way to appreciate what the book offers, and how it differs from all other introductory statistics textbooks.

The software that goes with the books is ESCI ("ESS-key", Exploratory Software for Confidence Intervals). ESCI runs under Microsoft Excel. There are different versions of ESCI for each of the books, and both versions can be downloaded, free, from www.thenewstatistics.com   ESCI and the books are intended to support better understanding of the new statistics, and their use by researchers and students in a wide range of disciplines.

Further information about the books, and our statistics blog, are at: www.thenewstatistics.com  There are many videos, extra exercises and datasets, quizzes, teaching and learning guides, and many other goodies provided to go with the book.

My earlier book also took an estimation approach, after explaining why that's much better than using statistical significance testing. It includes three chapters on meta-analysis.

Cumming, G. (2012). Understanding The New Statistics: Effect Sizes, Confidence Intervals, and Meta-Analysis. New York: Routledge.  You can download the book's Preface, Contents, and a sample chapter from the Publisher's website for the book. 

In January 2014, Psychological Science, perhaps the world’s top empirical journal in psychology, introduced drastically revised author submission guidelines, including strong encouragement to use the new statistics. The new guidelines are http://tiny.cc/pssubguide There is an explanation at  http://tiny.cc/apseichinterview

Eric Eich, the journal's then editor, commissioned me to write this tutorial article to explain the new statistics and support the changes: http://tiny.cc/tnswhyhow

Cumming, G. (2014). The New Statistics: Why and How. Psychological Science, 25, 7-29.

My main recent research has been in the area of statistical cognition, which is the study of how people understand--or misunderstand--statistical concepts, and various different ways to present the results of statistical analyses.  I advocate the evidence-based practice of statistics, meaning that our selection of a statistical technique should be supported by cognitive evidence that people understand it well.

I retired in January 2008, mainly to write these books and develop ESCI. More recently my wife Lindsay and I have moved to a wonderful new house in Woodend, an hour out of Melbourne. I write for The New Statistics blog, and Lindsay and I spend considerable time with our seven grand-children.

I may be interested in visits to interesting labs in interesting places. I can offer research talks and various statistics workshops, as given for example at many APA and APS Conventions.


selected publications