audience research
noun[U]
MARKETINGukusthestudyofpeoplewhowatchaparticulartelevisionprogrammeorfilm,readaparticularbook, etc.:
Thechannelcarriesoutitsownaudienceresearch.
Ouraudienceresearchshowedthatpeopledon'twanttoreceivealongnewslettereverymonth.