2 papers
stat.ME2026
Identification of causal policy effects for spatial exposure fields
S. I. Watson, J. Fraser-Govil
Many interventions act on an entire spatial exposure field. We study when their induced laws satisfy policy positivity and what its failure implies for causal evaluation through we…
stat.ME2026
Embracing Spillover: Spatial Effects in Experiments
Samuel I. Watson, Penny Hancock, Jack Fraser-Govil +2
Interventions delivered in space generate effects that spill over between experimental units. We develop a framework for spatial experiments in which causal estimands, inclduing di…