“…Ground rule efficacy has typically been evaluated by examining children's brief (one or two word) responses to incomprehensible, complicated, or misleading questions (see, for example, Endres, Poggenpohl, & Erben, ; Nesbitt & Markham, ; Peterson & Grant, ; Saywitz, Snyder, & Nathanson, ). In forensic situations, however, investigative interviewers are specifically trained to avoid such prompts and are instead taught to emphasize non‐misleading open questions (such as “Tell me more about that part.” and “What happened next?”) which elicit lengthier, narrative responses (Lamb et al, ; Powell, ). Minimal research has investigated whether ground rules still provide benefits over the duration of a narrative interview.…”