This is a primer on research standards.
It has three parts.
Intuitive (but insufficient) evaluation:
Standards of research quality:
Implementation of quality research:
“Evidence-based practice” is kind of like “the right outcome” of a trial.
Nobody's against it – but people have very different opinions of what it is!
But they're alike in another way: Not all opinions are created equal.
“Our program definitely works. Just look at Timmy! He went through it, and turned his whole life around!”
This is not, by itself, evidence of a program's effectiveness.
With enough participants and normal conditions, you're effectively guaranteed to have successes even in a bad program.
In other words:
Anecdotes aren't good evidence!
Imagine two programs doing the same thing.
We normally believe that the 80-unit program is better.