*2.3.1 Gender and age differences*

It was found that boys are significantly more frequent in the group with high life satisfaction and low psychological symptoms (*Complete Psychological Health*). Girls are significantly more frequent in the group with low life satisfaction and strong psychological symptoms (*Complete Psychological Distress*).

It was also found that younger pupils were significantly more frequent in the group *Complete Psychological Health* and older pupils in the group *Complete Psychological Distress.* A gradient was observed with the increase in school grades.

Overall, the percentage of girls reporting psychological symptoms is significantly higher than that of boys, even when they report high life satisfaction. Conversely, the percentage of boys reporting no psychological symptoms is significantly higher than that of girls, even when they report low life satisfaction.

Younger participants are more satisfied with life, whether or not they have pronounced psychological symptoms, and older participants are less satisfied with life, whether or not they have pronounced psychological symptoms.
