MATRIX 113 2 ) Voter perceptions of a negative campaign ad. The response is the ) rating for the ad, with 1 being very positive and 7 being very ) negative. There are five groups. Group 1 read only the ad. ) Group 2 read the ad and an editorial that characterized it as ) generally positive. Group 3 read the ad and an editorial that ) characterized it as negative. Group 4 readly only the positive ) editorial. Group 5 read only the negative editorial. Artificial ) data based on Bos (2003). )"%lf %lf" 1 4 1 2 1 6 1 4 1 6 1 3 1 4 1 5 1 4 1 4 1 6 1 6 1 3 1 4 1 4 1 4 1 4 1 2 1 4 1 6 1 4 1 5 1 4 2 4 2 5 2 2 2 4 2 6 2 5 2 5 2 2 2 4 2 5 2 5 2 5 2 5 2 4 2 5 2 6 2 4 2 5 2 5 2 3 2 3 2 4 2 6 2 2 2 5 2 4 2 3 3 7 3 5 3 6 3 4 3 3 3 5 3 7 3 7 3 6 3 5 3 7 3 5 3 5 3 7 3 6 3 5 3 7 3 7 3 6 3 4 3 5 3 6 3 5 4 7 4 3 4 3 4 5 4 5 4 4 4 4 4 4 4 4 4 3 4 2 4 4 4 3 4 5 4 2 4 4 4 3 4 2 4 4 4 1 4 4 5 3 5 5 5 7 5 5 5 6 5 3 5 5 5 6 5 5 5 5 5 4 5 6 5 4 5 7 5 7 5 7 5 6 5 6 5 6