"Across most of the visible spectrum males require a slightly longer wavelength than do females in order to experience the same hue," the team concludes in the latest issue of the journal Biology of Sex Differences.
Since longer wavelengths are associated with "warmer" colors, an orange, for example, may appear redder to a man than to a woman. Likewise, the grass is almost always greener to women than to men, to whom verdant objects appear a bit yellower.
In philosophy, qualia (/ˈkwɑːliə/ or /ˈkweɪliə/; singular form: quale) are what some consider to be individual instances of subjective, conscious experience. The term "qualia" derives from the Latin [...] quālis meaning "of what sort" or "of what kind"). Examples of qualia include the pain of a headache, the taste of wine, or the perceived redness of an evening sky.