Wren--I see your point (although I haven't actually looked at the survey itself) because our DD8's experience with different extracurriculars has been all over the map (e.g., getting kicked out of dance (almost literally!); learning about but not really caring about chess; milling about aimlessly in soccer; loving IMACS). But maybe the study is a first step and not intended to be a comprehensive review--but perhaps also the person running the study doesn't understand how off the mark it might be. It might actually be helpful to them if you emailed the tree you suggest based on your personal experience to give them the opportunity to understand that. (DH is a statistician and is always going on about various biases, so it's a topic I hear a lot about wink

Best,
Dbat