Question: Explain how marketers assess promotional effectiveness. The effectiveness of advertising can be measured by both pretesting and posttesting. Pretesting is the assessment of an ad's effectiveness before it is actually used. It includes such methods as sales conviction tests and blind product tests. Posttesting is the assessment of the ad's effectiveness after it has been used. Commonly used posttests include readership tests, unaided recall tests, inquiry tests, and split runs.