<p>The articles collected here are foundational contributions to incorporating behavioral research in risk analysis. On the one hand, they address the questions of how to communicate with the public about risks, learning about the public&amp;rsquo;s concern and addressing them with responsive risk management and authoritative communications. On the other hand, they address the questions of how to ensure that risk analyses make realistic assumptions about how people will behave, when they are part of risky systems, and what role expert judgment plays in analytical results. Ensuring behaviourally realistic risk analysis has been a central mission of the author&amp;rsquo;s career and here he achieves the clarity long sought for. These articles touch on each fundamental area, demonstrating the possibilities for collaborative applied research and the basic research that it impels.</p>