Onionhead® is great for all ages, from 1 to 101. 
However, with all our present problems concerning children, we want to reach them as young as possible. The faster we teach them emotional knowledge and social skills, the faster we will help them have a more loving and successful life. Onionhead products are generally developed for “ages uo to 9″ (for children’s) and “ages 9 & up” (for teens and adults).
Pick up a feeling card and have them make the face, then say the feeling. Seth, a 2 year old child, did this all day long. He would pick up a card and mirror back the face. Then we moved into the exercise of telling him what the feeling meant every time he did this. He developed more emotional knowledge than any 2 year old we had ever seen.
Anger is a reaction to another emotion. This is why teaching children a larger emotional spectrum is vitally important. Create a conflict resolution platform by separating the deck into the positive light and heavy emotions. Have the person pick three cards from the heavy deck, and then have them pick three cards from the light deck. The heavy emotions reflect the true underlying feelings. Using the three light emotions, have the person construct a peaceful solution to the problem.
For a 15 year old, the parent should always involve themselves. Each family member should pick two cards – one with the dominant hand (the hand with which you write) and one with the non-dominant hand. Go around the table and speak about these feelings and why you have them. Listen to your teenager – do not separate yourself from him. Treat him with respect as an equal.