This article assesses how the bounded rationality of the public, planning authorities, and experts distorts the environmental assessment (EA) process and how the international law on EAs could overcome such distortions. Data was gathered through the analysis of relevant law and policy documents, as well as authoritative court texts. This article concludes that the current international law on EAs does not sufficiently take behavioral insights into account. Several ways as to how insights on bounded rationality could be incorporated into the international law on EAs are discussed.