Why it matters
Makes real-world evaluation possible when true experiments are impractical.
Core term · Donald T. Campbell
Quasi-Experiment
A study estimating causal effects without full random assignment.
Areas of life
Educationpolicyproduct testingtherapy
How to handle it
Compare groups carefully and name the threats to causal interpretation.
Who shaped this idea
The thinker behind it
From concept to practice
Turn Quasi-Experiment into a question you can answer.
Psipas asks you one small, honest question at a time — and builds the picture from your answers.