From the summary:
This first-of-its-kind study measures states’ use of cost-benefit analysis. The approach compares the expense of public programs to the returns they deliver, enabling policymakers to direct limited dollars toward the most cost-effective programs and policies while curbing spending on those that have proven to be ineffective.
This report is intended to serve as a resource for policy leaders seeking to expand their use of cost-benefit analysis and as a baseline for future studies of states’ progress in using rigorous evidence to better inform tough budget and policy choices.
Overview and key findings