Monday assorted links
1. ADHD diagnosis is a mess (NYT).
2. John Cochrane on tariffs, savings, and investment.
3. More on low productivity growth in construction.
4. Ken Rogoff is now on Substack.
5. DolphinGemma: How Google AI is helping decode dolphin communication.
6. Russian birth rates hit new low.
7. Out of date (a lot will be happening this week), but a new paper on ChatGPT as an economics tutor.