Portfolio tests refer to

Multiple Choice

presenting a panel of consumers with an ad and asking for their reactions concerning the ad$$s effectiveness and appeal.

placing a test ad in a collection with several other ads, asking consumers to read through them, and then asking for their impressions of the ads.

presenting consumers with a sample of a product and several different advertisements for the product, then asking them to explain which one they think is most effective and why.

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.

using electronic devices to measure viewer response or feelings after viewing an advertisement.