Q. Subjective method for measuring advertising Effectiveness?

Subjective method for measuring advertising Effectiveness: - There are a variety of methods given by different experts for measuring ad-effectiveness. However most of the methods are subjective in nature, as they don't give any universal criterion for measuring ad-effectiveness. There are a variety of criterions like increase in sale, attention gaiting ability easy to remember, entertaining, humorous, persuasive etc. For measuring acknowledged criterion. It is probable that an advertisement is effective on one criterion but effective on the basis of other criterion.