What test takes place over several days, usually with viewers watching a show at a particular time, then being called later and questioned about its commercials?

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DAR (Day-After Recall) is a test that takes place over several days, usually with viewers watching a show at a particular time, then being called later and questioned about its commercials. DAR is used to measure the effectiveness of TV commercials.

What Test Takes Place Over Several Days, Usually with Viewers