Many give the term "shallow" too narrow a meaning by stating it only refers to those who judge others purely on looks. Here is a list of characteristics that actually define a person as shallow:
1. Their thoughts are mainly concerned with unimportant things, such as the way they look or how others are judging them
2. They are unable to connect with others on deep emotional levels
3. They make judgements based on trivial, surface-level information

4. They are overly concerned with material things

Too mentally affected to go deep into things.

A person who cannot access the imaginative, creative, understanding, emotional part of their brain. Shallow people are brainwashed by the media, they can't think for themselves. They tend to like hilary duff, britney spears, and mainstream rap and the little mainstream rock that is played. They serve no purpose to this earth. Their future holds long lines of angry customers that want their hamburger, and the words "we love to see you smile".
see deep depth creativeprepmainstream music

to care more about looks than personality

To base the format of a structure only on appearance.

Shallow people only care about what you look like. They could give a shit less about you on an emotional level.

Some say a person is shallow because they judge a person on looks and not their personality when looking for a mate, however that is bull because there is nobody in the world who dates somebody who they deem unattractive but with a great personality, or at least, not for long. Not many people consider some people have a great personality and are really nice because they are unattractive and have to put more effort in for love and acceptance, not simply because they truly are just so funny and nice. If a person is SHALLOW in terms of how things really are, then they pick on the slightest imperfections of people expecting a person to be perfect and becoming critical about standards that shouldn't be incredibly high in certain, given aspects.