Final answer:
In addition to developing a sense of self, adolescents also experience tasks such as developing autonomy and feeling competent.
Step-by-step explanation:
In adolescence, according to R. Havighurst's Developmental Tasks, in addition to developing a sense of self, teens also experience other tasks. One of these tasks is developing autonomy, or a sense of independence and decision-making ability. Another task is feeling competent, which involves acquiring skills and knowledge in various areas of life.