In economics? the term depression, e.g. the Great Depression? or crisis is now almost universally replaced by the word "correction", as in a "market correction?." It is very rare to find economists predicting a depression - in part because such predictions can self-fulfil?:

In psychology?, depression refers to a lack of human happiness. While there are definitions of clinical depression?, these tend to poorly describe the specific elements of a lack of happiness. There is a substantial study of happiness?:
  • World Value Survey?
  • the work of Ed Diener and Lee Berk?
  • the controlled study? at Promega? of the impact of meditation? on brainwaves in their US workplace? - resulting in lower stress? and better immune system?s
  • direct neurology? studies of Tibetan Buddhist monk?s' brainwaves which was motivated by:
  • other studies by Richard Davidson? of their ability to train the brain, specifically the left prefrontal cortex? whose stimulation is highly correlated to reports of well-being; the right prefrontal cortex? on the other hand reflects distress, and the balance between the two represents the happiness set point?.

Buddhists advise avoiding depression by discipline, to remain in a happy state by focusing on compassion?:

Buddhist Lama?s liken the state of the mind to that of the oceans: very deep but capable of being disturbed only on the surface. They emphasize "inner freedom?" from anger, pride, jealousy, and other craving?s. This was validated scientifically by study of addiction. In this view, depression is likened to "sitting in a cave facing North and waiting for the Sun. You'll never see it."

The Dalai Lama?'s book The Art of Happiness? is a set of advice to non-Buddhist?s on achieving some of the masteries of contemplative tradition?s involved, and the relationship of these to the so-called "philosophy" and ethical tradition?s practiced in post-European cultures.

There are many social and political initiatives directly arising from the study and discipline of happiness:

The use of the word depression in all of economic, personal psychologic, and social contexts may be warranted, as all three may share a common root in perception and cognition. In order to work and play together effectively, humans may require a degree of payoff in direct happiness terms.

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