At first, lifestyles were researched using large sets of AIO items. AIOrefers to measures of activities, interests and opinions. Thus, authors suchas Peter and Olson (1994: 463) define ‘lifestyle’ as ‘the manner in whichpeople conduct their lives, including activities, interests, and opinions’.Activities are manifest actions (work, hobbies, social events, vacation,entertainment, clubs, community, shopping, sports, etc.). Interest insome objects, events or topics (family, home, job, community, recreation,fashion, food, media, achievements, etc.) is the degree of excitement thataccompanies both special and continuing attention to it. Finally, opinionsare descriptive beliefs (of oneself, social issues, politics, business,economics, education, products, future, culture, etc.) (Plummer, 1974).
