Generalizing causal effects with noncompliance: Application to deep canvassing experiments

Understand

Standard approaches in generalizability often focus on generalizing the intent-to-treat (ITT).

• However, in practice, a more policy-relevant quantity is the generalized impact of an intervention across compliers.
• While instrumental variable (IV) methods are commonly used to estimate the complier average causal effect (CACE) within samples, standard approaches cannot be applied to a target population with a different distribution from the study sample.
• This paper makes several key contributions.