# How long can a person stay happy, excited and motivated about something new?

I'm interested in learning more about studies or experiments that determine how long a typical person can stay excited about something new:

New job
new project
new relationship
new idea
new purchase/toy


Is there any evidence to support the hypothesis that humans are excited by new things/prospects, but only for a short time? If so, how short? Is it days, weeks or a "honey moon"?

A while ago I've heard a talk on TED.com that happy people are up to 30% more productive (Does happiness affect productivity?), and I'm wondering if this is applicable to "being excited about something new" - i.e: are people more effective/smart when they are taking on new project, new job or a new relationship? Are people more excited, energized and engaged when they conceive new ideas?

It would also help if I get to learn what the search term for "being excited about something new" is.

Update: Looking into happiness and productivity produced two terms: "Happiness economics" and Hedonic Adaptation. The article on hedonic adaptation says that happiness is homeostatic in nature

a system that regulates its internal environment and tends to maintain a stable, relatively constant condition of [its] properties

Reading that happiness regulates itself (as in negative feedback) sounds very reasonable to me, and I recall reading about antidepressants and Serotonin, which also mentioned that Serotonin production uses negative feedback, where more Serotonin released now inhibits release of more Serotonin, thus antidepressants dont work immediately and require a couple weeks to take effect[looking for a link].

I'm wondering if the process of being excited about something new is also homeostatic in nature?

• Here's the TED talk that mentions the 31% better brain performance when happy The speaker in the talk references his experience with Harvard Freshmen, who lost their initial happiness about getting into harvard after 2 weeks. Nov 1 '12 at 16:34
• We have the ability to consciously remind ourselves of achievements / changes in life etc. While the strength of the effect might diminish over time, there is no reason why we shouldn't extract some happiness until the last day. Nov 3 '12 at 18:58
• As a personal note I find this especially true for things which effect your daily routine. For example I experience a little smile whenever I am reminded about the lasik surgery from many years ago. Nov 3 '12 at 19:00