Evidence-Based Practice / Unit 22 EBP 3163 short lesson, about 20 seconds
Threats to Internal Validity
Captions available
The idea
A designer anticipates the threats that could make a study's result reflect something other than the intervention, and builds against them in advance.
In practice
A design that guards against a known threat rather than reporting it later.
Where people slip
Unit 06 taught these as biases an appraiser finds. The designer's job is to make them not happen.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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