As I see it, this is where we stand. We measure the sales effectiveness of ads or commercials on their ability to attract attention and communicate, or on their ability to affect attitudes, or on some combination of these and we hope, and have some evidence to indicate, that we are really measuring the sales effects of the advertising
"Ads Can Change Attitudes, Hike Sales; Effects Measurable," Marketing News, February 16, 1976, p. 5.