Evidence-Based Practice / Unit 6 EBP 0787 short lesson, about 20 seconds
What Random Assignment Does
Captions available
The idea
Random assignment equalises across the groups the variables that might otherwise influence the relationship between intervention and outcome, reducing bias and increasing confidence that the intervention caused the outcome.
In practice
Two groups alike in everything except the intervention.
Where people slip
It equalises known and unknown variables alike, which is the property no other method has.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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