ImpactMojoCausal Designs — Refresher
RCTs, RD, DiD, matching, pre-post — ranked, explained, and matched to your question, on one page.
Branded PDF · delivered to your inbox within 24 hours of payment.
Why this matters
Everyone nods at 'counterfactual' and then commissions a pre-post with no comparison group. This sheet fixes that.
The designs from strongest to weakest, when each applies, and the threats to watch.
What it changes
What's inside
- Branded one-page PDF reference
- Designs ranked by internal validity
- How to pick; threats to validity
- Matches design to question type
Sample
A preview, watermarked. The file you receive after payment is clean.
The problem
Strongest → weakest
Pick based on
Threats
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