Mood
From Wikinfo
A person's mood is the repertoire of emotions and thoughts experienced at a particular time. In normal functioning, moods are largely adaptive to external events.
An optimist and a pessimist evaluate a situation relatively favorably and unfavorably, respectively. This applies also to expectations. The optimist looks at the world "through rose-tinted spectacles".
Mood disorders are mental illnesses where the normal functioning of mood is disrupted.
See also:
References
- Adapted from the Wikipedia article, "Mood" http://en.wikipedia.org/wiki/Mood, used under the GNU Free Documentation License

