Improving housewife's awareness of food. Awareness of prices / food / health damaging habits / food and connected calories / vitamins, calcium, ferric acid / opinions on healthiness of food / important things to notice when buying food / food-stuffs to be used / thinking of price or quality when buying food / opinions about good and bad eating habits / where do members of household use lunch and dinner / general health of members of household / someone in household under doctor's orders, someone slimming / sporting of members of household / smoking habits, drinking habits / use of vitamins / garden and growing of crops / r ever heard of five components daily meal should consist of / where is food bought / prices of food / reading habits / daily papers / whom to ask for information about healthy food / information about food and health from newspapers, magazines, radio, tv / kind of information / remembrance of particular slogan about food and health / remembrance of ads of "Voorlichtingsbureau voor de voeding" / seen poster and sticker of "verstandig leven" / r's rating of ads and other information of "Voorlichtingsbureau". Background variables: basic characteristics/ residence/ household characteristics/ characteristics of parental family/household/ occupation/employment/ income/capital assets/ education/ readership, mass media, and 'cultural' exposure