A theory that's been around for more than a decade describes a person's subjective well-being—"happiness"—as having a U-shape ...

Happiness over one’s lifetime has been popularly described as looking like a U-shaped curve: The joys of youth are followed ...

Researchers observed an inverted U-shape, where middle-aged adults reported the highest level of happiness, or no significant age-related trend at all. Happiness over one’s lifetime has been ...

Abstract In the World Bank Enterprise Survey, the share of entrepreneurs who are women first rises and then falls with national income, which reverses the well-known U-shaped relationship between ...

Figure 1: Inverted U-shaped function representing the relationship between rodent self-grooming levels and aversiveness of the situation.

This makes some job security efficient and the relationship between job security and growth an inverted U-shaped, i.e., basic labor protection increases growth, but generous protection reduces it.