Kids who eat breakfast get better grades. What is wrong with concluding that breakfast causes the grades?

They only move together. A third factor — like parents with time to cook — could cause both, or the direction could run the other way.

The classic hint: "what kind of kid eats breakfast every single day?" If they need that hint to get there, it is a Hard, not a Good.

due 2026-09-21 09:54Z · stability 0.00 · difficulty 0.00 · 0 reps · 0 lapses

0 reviews

Never reviewed. It is waiting in the new-card stack.

Evidence is the tutor's one-line justification, written with the grade (review_logs.evidence). “Needed a hint three sessions in a row” is the signal that the card's notes or answer need work — the loop the authoring chat is for (EXAMPLE-LESSONS, “Authoring feedback”).