A rating of 9 or 10 is classified as “very satisfied”, while a rating of between 0 and 4 is classified as “not satisfied”. One interesting result, though, is that, among adults, gender seems to have little effect on self-reported well-being. Indeed, there seems to be something specific to adolescence that produces the gender gap in self-reported life satisfaction. One possibility is that the gap reflects girls’ harsh self-criticism as they go through adolescence.