Symmetrical and Asymmetrical are design sub-principles with different meanings depending on which Principle you are referring to. Which two Principles do they belong to?

Some design principles related to Gestalt psychology include:

What is Cognitive Load?

Pandora suggesting songs to users but giving users the final say in accepting a recommendation is an example of:

Contrast of size or scale is part of which Design Principle(s)?

What is a necessary tool for turning quantitative research results into user segments?

Which Principle states that "hiding certain functions can be advantageous in interface design"?

What is "banner blindness"?

Which should be the minimum target area for each item in a collection view?

What aspect of gamification causes its players to form habits?

Why is Consistency so important?