Doing homework near to tv, radio etc. Time spent on doing homework / attitude to do homework / capacity to concentrate / doing homework in combination with listening to music or watching television / influence of music or tv on r.'s homework performance / (a distinction has been made between "learning" tasks and "making" tasks) / favourite tv and radio stations and programs / favourite kind of music. Background variables: basic characteristics/ education/ consumption of durables/ readership, mass media, and 'cultural' exposure