This ISR Insights talk will provide results from a standing Survey Research Center (SRC) Future of Surveys committee's ongoing work on more modern alternatives to the simple response rate for attempting to understand the nonresponse bias associated with a given survey estimate. We will review several modern alternatives to the simple response rate, and clarify that in an era of declining response rates, there are better alternatives for understanding whether estimates based on a survey with a low response rate are really subject to nonresponse bias.