My youngest daughter has Responsibility as her #1. This theme is apparent in her, as she takes psychological ownership for everything the commits to. If she says she will do it, she will...because she told you so. Her word is gold.
This theme is highly ethical, utterly dependable and fiercely loyal. If Responsibility is one of your dominant themes, you are someone others often trust to get things done. You try your best to keep promises and follow through on commitments.
In comparison, I have Achiever #1. If you took a snapshot of my home on a given day, you may see the lights on at a late hour. Achiever keeps me up late because I put it on my list. And I want to check it off...so I will burn the midnight oil to have it off my list. Responsibility will work late because you told someone you would finish a project. If you didn't know, you couldn't tell why we would be up late. But knowing our themes of talent, you can clearly see WHY!
In a child, Responsibility show itself in how it cares for family pets, and the strong need to do things right. (When Katy was little, if she couldn't do it right, she didn't want to do it at all.) Responsibility in a child will also manifest itself in their inability to say, "No" to extra requests from friends, teachers, etc. Their plates, therefore, get full fast. Help them understand that every time you say "Yes" to something, that will mean them saying "No" to something else. Help them to prioritize their "Yeses"!