Exercise for depression: the evidence does not support this treatment
I've written about this before (in 2014, and in 2017), but due to popular demand, we cover it again. The topic is very important because depression is perhaps the most…
Causal effect of education on IQ scores using the discordant twin design?
Recently, the twin-control design has been used to test causal models (e.g. exercise→happiness, exercise→¬depression/anxiety symptoms, casual sex→depression/suicidal thoughts). The theory is simple. Suppose we do a standard cross-sectional design study…