The Art of Crafting Prompts for Essay Grading with ChatGPT Introduction In our first blog, “A Comprehensive Guide to Essay Grading with ChatGPT,” we navigated the initial steps of using the ChatGPT API for grading essays. For those with some python experience, the process of incorporating code from the first blog is …

How to Grade Essays with ChatGPT Introduction The rise of large language models (LLMs) like OpenAI’s ChatGPT has opened exciting possibilities in essay grading. With its advanced natural language processing capabilities, ChatGPT offers a new dimension in assessing written work, potentially revolutionizing the grading …

Estimating subgroup impacts in an RCT can be hard. An RCT by itself is usually underpowered for this task–we barely have enough data to give us an overall average, and as subgroups are smaller, they are noisier! One idea recently gaining increased traction is to augment an RCT with observational data. We might use …

Do you ever want to visualize the distribution of effects across sites in a multi-site evaluation (or meta analysis)? For example, consider a multisite trial with 30 sites, where each site is effectively a small randomized experiment. A researcher might fit a multilevel model with a random effect for the impact in each …

There are a lot of ways to do power calculations, but I wanted to show off a package, PUMP, that my collaborators and I recently set out into the world. The original purpose of the package was to provide tools for power analyses that account for multiple outcomes under a variety of common experimental designs—an …

A simulation and R tutorial demonstrating how to recover interpretable treatment effects from logistic regression.

When estimating average treatment impact for a multisite randomized trial, recent literature (see Bloom et al. (2017)) has suggested using the so-called FIRC (Fixed Intercept, Random Coefficient) model. There are some technical details that make fitting this model slightly tricky in R; this post talks through these …

This is a live document that is subject to updating at any time. Introduction This document, the first of a three part series, is an introduction to matching in R using the optmatch and RItools packages. We focus on unit-to-unit matching, as opposed to other recent approaches that focus on obtaining overall balance in …