Definition from the APA Dictionary of Psychology:
in marketing or advertising, an extended form of demographic analysis that surveys the values, activities, interests, and opinions of populations or population segments (psychographic segmentation) to predict consumer preferences and behavior. Psychographic profiling is generally carried out with proprietary techniques developed by private research firms. The information is then used in the development of advertising messages, as well as in products designed to appeal to individuals with specific profiles. Such analysis was formerly referred to as activities, interests, opinions (AIO)
Handbook of Market Segmentation by 
Values, Lifestyles, and Psychographics by 
Consumer Profiles by