This paper presents an interdisciplinary approach to estimating the relativ
e efficiency of static, myopic, and dynamic insecticide regulatory decision
making when there are potential impacts associated with pest resistance. A
theoretical control model was developed using expected total economic surp
lus as the objective function, with an empirical solution to the maximizati
on problem attained by imposing a heuristic search procedure on a bioeconom
ic simulation model. Although the impact of non-dynamic decision making was
the most severe, in percentage terms, for short-run planning horizons, the
magnitude of the long-run losses associated with non-dynamic decision maki
ng could serve as a rationale for modifying the regulatory process to inclu
de dynamic considerations. The static analyses usually used in the benefits
assessment procedure may severely underestimate the actual benefits of con
tinued chemical registration, and the efficiency gains to society have the
potential to offset the increased costs of regulation that would occur unde
r a revised process.