Articles by Shravan Vasishth

Estimating the carbon cost of psycholinguistics conferences

October 5, 2019 | 0 Comments

Estimating the carbon cost of psycholinguistics conferencesShravan Vasishth 10/5/2019Note: If I have made some calculation error, please point it out and I will fix it. Suggestion At the University of Potsdam we are discussing how to reduce our carbon footprint in science-related work. One thought I had was that we ... [Read more...]

How to capitalize on a priori contrasts in linear (mixed) models: A tutorial

August 16, 2018 | 0 Comments

We wrote a short tutorial on contast coding, covering the common contrast coding scenarios, among them: treatment, helmert, anova, sum, and sliding (successive differences) contrasts.  The target audience is psychologists and linguists, but really it is for anyone doing planned experiments.   The paper has not been submitted anywhere yet. We ... [Read more...]

Stan Pharmacometrics conference in Paris July 24 2018

July 25, 2018 | 0 Comments

I just got back from attending this amazing conference in Paris:http://www.go-isop.org/stan-for-pharmacometrics---paris-franceA few people were disturbed/surprised by the fact that I am linguist ("what are you doing at an pharmacometrics conference?").... [Read more...]

Two papers, with code: Statistical Methods for Linguistic Research (Parts 1 and 2)

August 2, 2016 | 0 Comments

Here are two papers that may be useful for researchers in psychology, linguistics, and cognitive science:Shravan Vasishth and Bruno Nicenboim. Statistical methods for linguistic research: Foundational Ideas - Part I. Language and Linguistics Compass, 2016. In Press. PDF: http://bit.ly/VasNicPart1Code: http://bit.ly/VasNicPart1CodeBruno Nicenboim and ... [Read more...]

Automating R exercises and exams using the exams package

January 17, 2016 | 0 Comments

It's a pain to design statistics exercises each semester, and because students from previous share old exercises with the new incoming students, it's hard to design simple exercises that students haven't already seen the answers to. On top of that, som... [Read more...]

Some reflections on teaching frequentist statistics at ESSLLI 2015

August 17, 2015 | 0 Comments

I spent the last two weeks teaching frequentist and Bayesian statistics at the European Summer School in Logic, Language, and Information (ESSLLI) in Barcelona, at the beautiful and centrally located Pompeu Fabra University. The course web page for the first week is here, and the web page for the second ... [Read more...]

Should we fit maximal linear mixed models?

November 25, 2014 | 0 Comments

Recently, Barr et al published a paper in the Journal of Memory and Language, arguing that we should fit maximal linear mixed models, i.e., fit models that have a full variance-covariance matrix specification for subject and for items. I suggest here t... [Read more...]

Simulating scientists doing experiments

November 22, 2014 | 0 Comments

Following a discussion on Gelman's blog, I was playing around with simulating scientists looking for significant effects. Suppose each of 1000 scientists run 200 experiments in their lifetime, and suppose that 20% of the experiments are such that the n... [Read more...]

lmer vs Stan for a somewhat involved dataset.

December 17, 2013 | 0 Comments

Here is a comparison of lmer vs Stan output on a mildly complicated dataset from a psychology expt. (Kliegl et al 2011). The data are here: https://www.dropbox.com/s/pwuz1g7rtwy17p1/KWDYZ_test.rda.The data and paper available from: http://openscience.u... [Read more...]
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