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Table 2 A taxonomy of spillover effects in relation to the main intended intervention effect

From: Framework for identification and measurement of spillover effects in policy implementation: intended non-intended targeted non-targeted spillovers (INTENTS)

   Type of effect
Intended (by the intervention) Non-intended (by the intervention)
Unit affected Targeted by the intervention Main effect Within-unit
Spillover effect
Not targeted by the intervention Between-units
Spillover effect
Diagonal
Spillover effect