Those unwanted results from the Ontario’s Mathematics Proficiency Test
You may recall a few months back that Canada's highest court declared a math test for school teachers to be ... unconstitutional: As a result of a recent decision of…
School factors are not important: evidence from classroom separation studies
People commonly ascribe large effects to having this or that teacher, or this or that classmate. They usually cite some anecdotes from their personal lives for this, but large sample…
How many associations are causal? How can we find out?
Gwern has discussed this before, but here's another take inspired by this Twitter exchange: https://twitter.com/KirkegaardEmil/status/827259356857004032 I envision the following way of finding out: Gather a large cross-sectional dataset of MZ…