A method of pre-testing an advertisement; after looking through a portfolio of different versions of a particular advertisement, respondents chosen from the target market are asked to recall in detail those which they can remember. Portfolio test is a laboratory method. It includes test and control ads. Along with the regular advertisements some dummy copies are kept in a folio. Then the consumer-sample sees the folio. The consumer is then asked about what he has seen in each ads. The ad giving minimum playback is considered the best. But then it is necessary to observe whether the chosen advertisement is dummy or regular. If found dummy the actual one is improved on the same lines.