No, the findings are interesting because the data suggest that nearly 75% of males and females make judgments like these based solely upon appearances, not experience and/or knowledge.
Yes, gum makes a difference...when making erroneous judgments about people.
Jesus said: "Judge not, that you be not judged. For with what judgment you judge, you will be judged; and with the measure you use, it will be measured back to you." (5:1-2)