Type 1s and Type 3s share many common traits: they are both task-oriented, achieving, efficient and organized. But, it is the reasons for theses behavior that distinguish the two types. Type 1s are idealistic and strive for perfectionism because they want to do the right thing. They will make sure every step of a task is done correctly. Type 3s are less worried about ideals and more concerned with getting things done. They are less worried about the process and more concerned about the end result and accomplishing their goals.
Type 1s are in the Compliant (or Dependent) Stance. They move towards others to get what they want and are more community driven. On the other hand, Type 3s are in the Assertive Stance. They move against from others and do not allow people to stand in the way of their goals.
Another difference between the two types is how they handle their emotions. Type 1s do not approve of their anger, so it will show up as resentment. They are not able to hide their irritation. Type 3s are able to hide their emotions to get their tasks done.