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?