Antidepressants, placebo and medicalising mood

When Professor Irving Kirsch and colleagues got hold of the unpublished data from drug company trials of antidepressants, it hit the headlines. But their analysis – that antidepressants and placebo pills have about the same clinical impact – was widely misreported. Hear it from the horse's mouth, from the stage of the 2009 Happiness and Its Causes Conference.