[MUSIC] Hello, in order to understand children's lives and children's roles, we think that children must be considered key informant. Not only others know about children's life, but also, children's must be considered experts in their own lives. For that reason, particularly from the 21st century, many research teams have restarted to collect data of big samples of children in different countries. Trying to understand aspects of children's lives which up to now we only analyze it from adult's report, from adult's point of view. And one of these films, it's objective well-being, and since started to collect data from children about their own subjective well-being, about their own perspectives, they are giving their opinions, their evaluations, their even aspirations. We have more and more found that some data were as expected, but some data were unexpected. In one of the unexpected results we have obtained more and more frequently, and I would like to underline in this presentation. Is the fact that in all countries we collected data among adolescents 12 to 16 years old. On their subjective well-being, we had evidence that subjective well-being of children is decreasing, constantly decreasing in this experiment. Satisfaction of children, of adolescents, on their overall lives. Satisfaction with most of their life domains, is constantly decreasing everywhere and we need to know that. That was a new information we got after developing research in different countries. Now we know because of the children's world's projected data that this decrease in many countries starts already at ten. Because of the children most probably collect the data from eight, ten and 12 years old. But is it still a phenomena that is into debate? We still don't understand. This creating overall life satisfaction because our rules existed along adolescent, is a new phenomenon. Is a phenomenon only happening in the industrialized country because of the stress who has submiting children at the schools. We are under debate, but that's an example as I said of new knowledge that we have when we start asking children directly on their own perspective, on their own opinion and assessments of life. One important aspect is that we have started to analyze the correlations within subjective well being, and data related with children's right situation. And I am going to give a few examples, and these examples we started to be able to discuss them after collecting data together with UNICEF of a big representative sample of Spanish adolescents 12 year old. That means adolescents in the first year of compulsory secondary education in Spain. And then we have incorporated some of these information in the children's worlds project and we haven't started to collect data from many other countries. First of all, we unexpectedly discovered that children reporting, they know they're rights, and they know the convention on the right of the child, United Nations conventions. These children also score higher, significantly higher, in their subjective well-being. That's an interesting relationship between data, and we think that's important to debate and gives us new opportunities to analyze intervention projects with children and together with children. We also, were to able to identify the children perceiving, that they are participating in different life context. That means, children that are listened to, they perceive they are listened to, and take into account in decision making in their family. They are listened at the school, by teachers. Or, they are taking into account, in decision taking,taken in their, late in municipality, these children, score significantly higher, in their subjects well-being. And that another important question to be taken into account. Another fact that perhaps is not so unexpected, but is very important from the point of view of children's rights, is that children that feel secure at home, and children that feel secure at school, and children that feel secure at the area and the neighborhood they live in, are children that score significantly higher in their subjective well-being. And less but not least, fourth example I would like to give you, is that, the children that report, they perceive they are well treated, well treated in the family, well treated by their friends, well treated by their school mate, well treated by their teacher. Each of these variables shows a significant correlation with subjective well-being. And children perceiving they are well treated are children that score significantly higher in the subjective well-being. That what I wanted to report this morning. Thank you very much. [MUSIC]