Portfolio tests refer to Multiple Choice presenting a panel of consumers with an ad and asking for their reactions concerning the ad's effectiveness, appeal, etc. placing a test ad in a collection with several other ads, asking consumers to read through them, and then asking them for their impressions of the ads. presenting a panel of consumers with an ad for a limited period of time, then removing the ad and asking the respondents to recall as much pertinent information as possible. presenting consumers with a sample of a product and several different advertisements for the product, then asking them to select the one they think is most effective and explain why. using electronic devices to measure viewer response or feelings after viewing an advertisement.