Desire2Learn Political Science (POS) 4 Practice Test

Path dependence in public policy means that decisions made in the past shape what options are available today and limit what can be done in the future. When a path is chosen, sunk costs—money, time, and political capital already invested—make reversing course costly and therefore less likely. Institutional arrangements—laws, agencies, and established routines—create inertia that embeds certain preferences and interests, making changes harder. Together, these forces push the policy environment to stick with familiar options and gradually lock in a particular trajectory.

An example helps: once a country builds a comprehensive pension system with specific funding rules and eligibility, those choices shape future budgets and political incentives, making major reform difficult even if circumstances change.

This isn’t about policy choices being random, or public opinion being the sole driver, or about having no constraints.