CONSISTENCY

  People see what they expect to see

TYPES OF CONSISTENCY

• AESTHETIC OR VISUAL : It is used to establish unique identities that can be easily recognized (consistency of style and appearance).

• FUNCTIONAL CONSISTENCY : Use to simplify usability and ease learning.

(The controls of a remote that are now universally recognized)

• INTERNAL CONSISTENCY : It is the consistency of elements within the same system.

• EXTERNAL CONSISTENCY : It is when elements are consistent with the environment outside the system.