Kevin O'Neill
Postdoc at University College London working on metacognition and causal reasoning. Former PhD student at Duke University with Dr. Felipe De Brigard and Dr. John Pearson. Founder of DIBS Methods Meetings.
Posts by Kevin
Ordered Beta Regression for Slider Data
In psychology, we often find ourselves running experiments or surveys in which participants are asked to respond on a numerical scale. For example, we’re probably all familiar with pain scales...
Multilevel models: what, why, and how
Analyzing data with repeated observations for a particular participant, stimulus, or other group is one of the most common things you need to do in psychology & neuroscience, like most...
Understanding Gaussian processes
If you have ever tried to analyze time series data, you know that time series present all kinds of statistical challenges. Probably the most challenging aspect of time series data...
Fitting drift-diffusion models with simulation
Last week, Raphael presented a fantastic conceptual introduction to drift diffusion models, which are an extension of signal detection models over time. Here I’ll be talking about what model fitting...
Power Analysis Through Simulation
So, you’re designing an experiment and you’re faced with answering the age-old question: How many participants do I need for this experiment to work? Probably, your advisor sent you down...
Intro to Probabilistic Programming with Stan
In this tutorial we’re going to talk about what probabilistic programming is and how we can use it for statistical modeling. If you aren’t familiar at all with Bayesian stats,...
Data wrangling in the tidyverse
Today we’re going to tackle a common problem faced by graduate students: you brainstormed to design an experiment with your PI, toiled away programming the task, put it out into...
Interpreting Regression Coefficients
Have you ever ran a regression and wondered where the coefficients come from or what they mean? Or perhaps you’ve tried the same analysis with different coding schemes, and the...
Bayesian Stats Basics
Bayesian statistics are gaining a whole lot of traction in psychology, neuroscience, and a whole lot of other fields. But, since most psychology departments don’t teach Bayesian statistics, you probably...
Blogging with R markdown and GitHub Pages
If you’re making a blog post on R-related content, you’re probably going to do it using R markdown (Rmd). However, you may have noticed that our website runs on GitHub...
