Psychological Statistics

A quick overview of the egocentric relation event model (EREM) with linked examples in R: part 1

This post is based on an interdisciplinary collaboration (between anthropologists and psychologists) with Kate Ellis-Davies and Sheina Lew-Levy (who initiated the project), Eleanor Fleming and Adam Boyette. The work was recently published in Field Methods and is available here: Demonstrating the Utility of Egocentric Relational Event Modeling Using Focal Follow Data from Congolese BaYaka Children and Adolescents Engaging in Work and Play. I led on the statistical modeling of the data including adapting the implementation for focal follow data (which I'll explain more about in part 2) with the other authors contributing knowledge of the theory and literature (as we were keen to ensure that we demonstrated the approach using real data addressing a substantive research question).

Aug

I Will Not Ever, NEVER Run a MANOVA

I have been thinking to write a paper about MANOVA (and in particular why it should be avoided) for some time, but never got round to it. However, I recently discovered an excellent article by Francis Huang that pretty much sums up most of what I'd cover. In this blog post I'll just run through the main issues and refer you to Francis' paper for a more in-depth critique or the section on MANOVA in Serious Stats (Baguley, 2012).

Jan

A brief introduction to logistic regression

I wrote a brief introduction to logistic regression aimed at psychology students. You can take a look at the pdf here:

A more comprehensive introduction in terms of the generalised linear model can be found in my book:

Baguley, T. (2012). Serious stats: a guide to advanced statistics for the behavioral sciences. Palgrave Macmillan.

May

Serious Stats: Obtaining CIs for Spearman's rho or Kendall's tau

I wrote a short blog (with R Code) on how to calculate corrected CIs for rho and tau using the Fisher z transformation.

May

Serious stats: Type II versus Type III Sums of Squares

I have written a short article on Type II versus Type III SS in ANOVA-like models on my Serious Stats blog:

https://seriousstats.wordpress.com/2020/05/13/type-ii-and-type-iii-sums-of-squares-what-should-i-choose/

Sep

Egon Pearson correction for Chi-Square

I have just published a short blog on the Egon Pearson correction for the chi-square test. This includes links to an R function to run the corrected test (and also provides residual analyses for contingency tables).

The blog is here and the R function here.

Sep

Provisional programme: ESRC funded conference: Bayesian Data Analysis in the Social Sciences Curriculum (Nottingham, UK 29th Sept 2017)

Bayesian Data Analysis in the Social Sciences Curriculum

Supported by the ESRC’s Advanced Training Initiative

Venue: Bowden Room Nottingham Conference Centre

Burton Street, Nottingham, NG1 4BU

Booking information online

Provisional schedule:

Organizers:

Thom Baguley twitter: @seriousstats

Mark Andrews twitter: @xmjandrews

Jul

Announcement: ESRC funded conference: Bayesian Data Analysis in the Social Sciences Curriculum (29th Sept 2017)

I am pleased to announce booking is now open for the end of Prior Exposure grant conference on Bayesian Data Analysis in the Social Sciences Curriculum on 29th September. We are still finalising the programme but have confirmed contributions from Richard Morey (University of Cardiff), Zoltan Dienes (University of Sussex) and Daniel Lakens (Eindhoven University of Technology) as well as presentations from Mark Andrews and myself.

Jun

STOP PRESS Introductory Bayesian data analysis workshops for social scientists (June 2017 Nottingham UK)

The third and (possibly) final round of the workshops of our introductory workshops was overbooked in April, but we have managed to arrange some additional dates in June.

There are still places left on these. More details at: http://www.priorexposure.org.uk/

As with the last round we are planning a free R workshop before hand (reccomended if you need a refresher or have never used R before).

May

Serious Stats blog: CI for differences in independent R square coefficients

In my Serious Stats blog I have a new post on providing CIs for a difference between independent R square coefficients.

You can find the post there or go direct to the function hosted on RPubs. I have been experimenting with knitr but can't yet get the html from R Markdown to work with my blogger or wordpress blogs.