[Adolescents as research subjects and free informed consent: knowledge and opinion of researchers and adolescents].

This article presents the results of a study that evaluated the knowledge and opinions of researchers and adolescents that served as their research subjects on the legal norms that regulate the participation of the latter as research subjects, the capacity of adolescents to make autonomous decisions regarding participation, and the adolescent experience after agreeing to take part in a study. This was a qualitative study with a convenience sample, the size of which was defined by the criteria of informational redundancy. Interviews were conducted with three researchers who had used adolescents as research subjects and nine of these subjects.