Why CBT is falling out of favour

'Researchers have found that CBT is roughly half as effective in treating depression as it used to be'

Everybody loves cognitive behavioural therapy. It's the no-nonsense, quick and relatively cheap approach to mental suffering - with none of that Freudian bollocks, and plenty of scientific backing. So it was unsettling to learn, from a paper in the journal Psychological Bulletin, that it seems to be getting less effective over time. After analysing 70 studies conducted between 1977 and 2014, researchers Tom Johnsen and Oddgeir Friborg concluded that CBT is roughly half as effective in treating depression as it used to be.

What's going on? One theory is that, as any therapy grows more popular, the proportion of inexperienced or incompetent therapists grows bigger. But the paper raises a more intriguing idea: the placebo effect. The early publicity around CBT made it seem a miracle cure, so maybe it functioned like one for a while. These days, by contrast, the chances are you know someone who's tried CBT and didn't miraculously become perfectly happy for ever. Our expectations have become more realistic, so effectiveness has fallen, too. Johnsen and Friborg worry that their own paper will make matters worse by further lowering people's expectations.