Normalising formant values for plotting and modelling

Phonetics
R
In this R tutorial, you will learn how to normalise formant values for plotting and for modelling.
Dec 3, 2025
Stefano Coretta

Obtaining expected values from the posterior predictive distribution in brms models

Regression models
Bayesian
brms
Statistics
Once you fit a Bayesian regression model with brms::brm(), virtually all subsequent operations are based on the model’s MCMC draws. Once estimand of interest, that is…
Nov 8, 2025
Stefano Coretta
 

It is OK not to be academically interested in society

Methods
Positionality
Through the years, I had a few encounters with other academics that ended on an underwhelming note. This is about different views on whether research can be conducted while…
Oct 31, 2025
Stefano Coretta
 

One Thousand and One names

Statistics
Regression models
The following table lists common “portmanteau” names for regression models. Note that different traditions/disciplines might use one particular name more often than the…
Jul 22, 2022
Stefano Coretta

Bayesian CrI-width power analysis

Regression models
Bayesian
brms
Statistics
This post shows how to do a quick and dirty Bayesian power analysis.
Apr 5, 2022
Stefano Coretta
 

How to simplify your study design

Regression models
We have all been there.
Dec 1, 2021

R gist — Dot matrix charts with ggplot2

Gist
ggplot2
R
Nov 21, 2021
Stefano Coretta
 

Regression models: a cheat-sheet

Statistics
Regression models
Regression models, aka linear regression models or regression models, are a group of statistical models based on the simple idea that we can predict an outcome variable \(Y\)…
Aug 21, 2021
Stefano Coretta
 

Factors, coding and contrasts

Statistics
Regression models
This post is an overview of how factors (i.e. categorical variables) are coded under the hood and which types of coding can be set in R.1
Jul 20, 2021
Stefano Coretta

R gist — Plotting the area under the curve with ggplot

Statistics
R
ggplot2
knitr::opts_chunk$set(echo = TRUE)
library(tidyverse)
library(ggthemr)
ggthemr("earth")
Warning: The `size` argument of `element_line()` is deprecated as of ggplot2…
Jul 4, 2021
Stefano Coretta
 

On phonologisation

Phonetology
After the post on the definition of random effects, I thought about writing another one on the definition of phonologisation.
Apr 24, 2021
Stefano Coretta
 

R gist — VOT and place of articulation

Phonetics
Gist
In this post, I plot data from Chodroff, Golden & Wilson (2019) in a 3D chart.
Apr 22, 2021
Stefano Coretta

Methods as theory

Methods
Meta-models
At least in linguistics, there is a general tendency to contrast theory with methods. This dichotomy is also reflected in the classification of academic papers as…
Mar 28, 2021
Stefano Coretta

On random effects

Regression models
R
Statistics
If you use mixed-effects models (aka multilevel models, hierarchical models), I am sure that at some point you asked yourself the following question at least once: Should I…
Mar 15, 2021
Stefano Coretta
 

Quotables — Rebecca Posner

Quotables
This is part of the post series ‘Quotables: notable quotes from notable linguists’.
Mar 7, 2021
Stefano Coretta
 

R gist — Plot an interactive 3D RGB colour space

Gist
R
plotly
library(plotly)
Jan 29, 2021
Stefano Coretta

How to globally set colour scales in ggplot2

R
ggplot2
After the post on using custom typefaces in ggplot2 (here), this time I’ll briefly discuss how to set colour scales in ggplot2 globally in an .Rmd file.
Dec 22, 2020
Stefano Coretta
 

How to use custom typefaces in ggplot2 [macOS only]

R
ggplot2
I keep hitting my head against this particular (and seemingly simple) task: using custom typefaces in ggplot2 plots and being able to knit to PDF.
Dec 21, 2020
Stefano Coretta

Plotting prior distributions with ggplot2

Statistics
Regression models
brms
ggplot2
R
The choice of priors is a fundamental step of the Bayesian inference process. Vasishth et al. (2018) recommend plotting the chosen priors to see if they are reasonable.
Jun 17, 2019
Stefano Coretta

An estimate of number of speakers per study in phonetics

Linguistics
Methods
A few weeks ago, I’ve asked on Twitter what people thought was the average number of participants used in phonetic studies. Here’s the tweet.
May 3, 2019
Stefano Coretta

Literate programming with Praat

Linguistics
Methods


Mar 21, 2019
Stefano Coretta
 

On the phonotactic restrictions of Proto-Indoeuropean roots

Linguistics
Proto-Indoeuropean lexicon is based on monosyllabic roots which have an alternating (ablaut) root vowel preceded and followed by consonants. In this post, I will share some…
Jan 6, 2019
Stefano Coretta

Plotting tongue contours with ggplot2

Phonetics
R
ggplot2
When plotting tongue contours data obtained from ultrasound tongue imaging in R using ggplot2, a common option to smooth over the individual contours and show the general…
Aug 23, 2018
Stefano Coretta

Vowel formants trajectories and tidy data

Phonetics
R
With the advent of more powerful statistical methods for assessing time series data, it is now becoming more common to compare whole vowel formant trajectories rather then…
Mar 2, 2018
Stefano Coretta
 

Wikipedia and the “Dialects of Italy”

Linguistics
The Italian Wikipedia has reached a number of 1,215,574 articles, with 1,247,172 registered users (source: Italian Wikipedia Statistics). That’s more or less one user per…
Aug 4, 2015
Stefano Coretta
 

Short review of phonological databases

Phonetology
List of available phonological databases (updated 2019-03-22):
Jun 30, 2014
Stefano Coretta
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