Sinrod observed of his survey, "60 percent of those who earn $50,000 or more prefer it to be over and 73 percent of those who earn less than $20,000 prefer under".
辛羅德在其調查中觀察到：「60%每月收入為5萬美元以上的人偏好於朝外放，73%每月收入為2萬美元以下的則偏好於朝內放」。