Negative thinking: Are you lighting the depression fuse?
20 09 2007
Today’s a grey, windy day. It would be so easy to think myself gloomy. Which got me thinking again about thinking, and how it relates to happiness and depression.
Last month I wrote about a recent study suggesting it may be hard to think your way out of depression. I warned readers not to let such results stop us from watching how we think, and perhaps avoiding depression in the first place.
As a further note-to-self to watch those thoughts, consider another thought-ful study.
Here’s what the study did.
- People were given tests of negative thinking to identify their risk of developing depression. People in the top quarter of scores were put in a high-risk group and people in the bottom quarter were put in a low-risk group. Currently depressed people were excused from the study.
- Participants’ mental health was assessed regularly over 2.5 years*. The assessors didn’t know which people were in which group.
Here’s what the study found.
- Whether or not people had a history of depression, a greater proportion of the high-risk group than the low-risk group developed both major depressive disorder (the clinical term for depression) and minor depression.
- For people with no history of depression, 17% of the high-risk group, compared with only 1% of the low-risk group, developed major depressive disorder. The high-risk group also had many more minor depressive episodes.
- The researchers concluded that negative thinking makes you more susceptible to depression.
Some studies look at the relationship between negative thinking and depression at a snapshot in time. But knowing things go together doesn’t say which came first - do you think negatively because you’re depressed or are you depressed because you think negatively? Because this study unfolded over time and excluded already-depressed people, it could say that depression followed thinking.
That doesn’t prove negative thinking causes depression, but it’s good evidence that negative thinking could be a contributor.
So please - watch what you think. It’s powerful.
Study details: Alloy L.B., Abramson L.Y., Whitehouse W.G., Hogan M.E., Tashman N.A., Steinberg D.L., Rose D.T., & Donovan P. (1999). Depressogenic cognitive styles: predictive validity, information processing and personality characteristics, and developmental origins. Behaviour Research and Therapy, 37, 503-531(29).
*The study was part of a series for which data was collected over 5 years. The results described here apply to the first 2.5 years of the data.
Related articles:
Maybe you can’t think yourself out, but don’t think yourself in
Author : Michele Connolly
Categories : Happiness research, Positive thinking


Schopenhauer* believed that life does not hold intrinsic meaning. Nor should we look to the world to make us happy. Rather, as in the animal kingdom, much of human life consists of repetitive efforts to meet our needs, interspersed with brief moments of satisfaction.



