Large-language models (LLMs) increasingly inform policy research. We asked 5 flagship LLMs from leading AI companies in 2025 (OpenAI, Google, Anthropic, xAI, and DeepSeek) to rate 26 prominent U.S.

This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American While modern science seems committed to the ...

Unfortunately, this book can't be printed from the OpenBook. If you need to print pages from this book, we recommend downloading it as a PDF. Visit NAP.edu/10766 to get more information about this ...

Self-report methods of dietary assessment, including food records, 24-hour recalls, and food frequency questionnaires (FFQs) have been in widespread use for decades. It has been shown, however, that ...

In today’s evidence-driven world, there is increasing demand for researchers with the skills to design, conduct, and evaluate studies that help institutions and schools improve their decision-making ...