The Stable Unit Treatment Value Assumption (SUTVA) is a fundamental concept in causal inference that posits that the treatment effect for each individual is unaffected by the treatment status of others. This means that each individual's potential outcomes depend solely on their own treatment assignment and not on the actions or characteristics of other units in the study. SUTVA is crucial for ensuring that the comparisons made in studies reflect true causal relationships without interference or spillover effects between subjects.
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