Psychographics n. : Any attributes relating to personality, values, attitudes, interests, or lifestyles. 

As opposed to

Demographics n. : The characteristics of a population (for example, gender, age group, education...).

Pew Research Center has come up with a quiz asking, How Millennial Are You?  This generation has become more than a date-range of births and more of an attitude toward life, be you 17 or 70.