Demographics and psychographics
1) Age, Gender, Education, Social class, Race/ethnicity, Job/profession/earnings and Home(city/village/countryside). 2) Because the companies want to advertise to their target audience. 3) The Aspirer, The Explorer, The Reformer, The Succeeder, The Resigned, The Struggler and the Mainstreamer. 4) The aspirer seeks status, the explorer seeks discovery, the reformer seeks enlightenment, the succeeder seeks control, the resigned seeks to survive, the struggler seeks escape and the mainstreamer seeks security. 5) I think the psychographic groups i belong in is the mainstreamer. This is because i only buy from brands or companies that i think are reliable or that satisfy my need for the product or i think are worth my money.