Welcome to Codechella Madrid 2026 — Mixtape Sessions' third in-person Spanish workshop.
When: May 25–28, 2026 (Monday–Thursday) Where: CUNEF Auditorium, Madrid Instructors: Scott Cunningham (Baylor University) + Dan Rees & Mark Anderson (Hidden Curriculum)
| Time | Mon May 25 | Tue May 26 | Wed May 27 | Thu May 28 |
|---|---|---|---|---|
| 8:30 – 9:00 am | Registration | |||
| 9:00 – 10:30 am | Core DiD | Covariates | Continuous | Staggered |
| 10:30 – 11:00 am | Coffee | Coffee | Coffee | Coffee |
| 11:00 am – 1:00 pm | Covariates | Covariates | Continuous | Staggered |
| 1:00 – 2:30 pm | Lunch (by research field) | Lunch | Lunch | Lunch |
| 2:30 – 3:30 pm | Dan Rees & Mark Anderson — Hidden Curriculum | Continuous | Staggered | Claude Code |
| 3:30 – 5:00 pm | Dan Rees & Mark Anderson — Hidden Curriculum | Continuous | Dan Rees & Mark Anderson — Hidden Curriculum | Claude Code |
| File | Topic | Workshop slot |
|---|---|---|
01-basics.tex |
Core DiD: the 2×2, parallel trends, event studies | Mon 9:00–10:30 (90 min) |
02-covariates.tex |
DiD with covariates: PSM, IPW, doubly-robust, weighted-PT diagnostics | Mon 11–1, Tue 9–1 (~5.5 hrs) |
02b-lalonde.tex |
LaLonde companion: 5 specs against the DW experimental benchmark on the NSW data | Used alongside Covariates |
03-continuous.tex |
Continuous-treatment DiD: CBS decomposition, ATT(d|d), ACRT, contdid |
Tue 2:30–5, Wed 9–1 (~6 hrs) |
04-staggered.tex |
Staggered DiD: Goodman-Bacon decomposition, Callaway–Sant'Anna, Sun-Abraham, BJS | Wed 2:30–3:30, Thu 9–1 (~4.5 hrs) |
05-claude.tex |
AI agents for empirical research | Thu 2:30–5 (Claude Code session) |
06-checklist.tex |
A DiD checklist — Brazil mental-health reform walkthrough (Dias & Fontes 2024) | Reference |
All decks compile with pdflatex <file>.tex and use remix.sty and madrid_theme.sty (both in the same folder).
The earlier (2025-era) Codechella decks are preserved in Slides/archived_2025/ for reference.
| Lab | Companion to | Notes |
|---|---|---|
basic/ |
Mon Core DiD | Five equivalent paths to the 2×2 (equivalence.R, .do, .py); event-study by hand |
Lalonde/ |
Mon Core DiD + Tue Covariates | LaLonde re-evaluation |
Lalonde-Covariates/ |
Tue Covariates | PSM / IPW / DR with LaLonde |
Castle/ |
Mon Core DiD | Cheng & Hoekstra castle doctrine — used in §3 of 01-basics |
China-WTO/ |
Wed Continuous | Lu & Yu (2015) WTO tariff data — 5 estimators of ATT(d|d) + event study |
Baker/ |
Thu Staggered | Staggered DiD bench data |
Brazil/ |
Reference | Brazil CAPS mental-health reform |
Texas/ |
Reference | Texas prison construction — synth + augsynth + synthdid |
Triple-Diff/ |
Reference | DDD simulation |
DDD/, Example-Code/, Kline-Moretti/, Medicaid-Expansion/ |
Inherited 2025 labs | Kept as reference |
baconplus— interactive continuous-DiD weight decomposer https://scunning1975.github.io/baconplus/ Use on Wed when introducing the four CBS weight formulas- Bacon decomposition explorer: https://mixtape.shinyapps.io/Bacon-Decomposition/ (Wed PM)
- Event-study explorer: https://mixtape.shinyapps.io/Event-Study/ (Mon)
cd Slides
pdflatex 01-basics.tex
pdflatex 01-basics.tex # second pass: Madrid title banner uses tikz remember-pictureThe second pass is required for the Gran Vía banner on the title slide to position correctly (any deck that uses \codechellatitle from madrid_theme.sty).
All figures referenced by the decks are in Slides/figures/. Code that regenerates figures lives in Slides/scripts/ (R, Python) and Slides/code/ (data simulations).
The top banner and the title slide of every deck use Slides/codechella_2026.jpg — Gran Vía at sunset, Madrid (Metropolis building visible left of center).
For agents or collaborators picking up this repo, see CLAUDE.md in the project root for design notes, the madrid_theme.sty palette spec, and the workflow conventions.