Forehead back... it mean

Thinking quickly.

While jutting the chin... it means 

  Slow reaction.

 

A person with that face thinks quickly (immediately).

But... he applies it slowly.

 

This is the type of face most people have.

Advancement of the forehead means... 

slow thinking.

While the chin back means...

  a quick reaction.

 

A person with that face thinks slowly...but

Reacting quickly without planning 

or thinking... 

usually makes mistakes in making decisions.

In that form ...

the forehead and chin are not forward 

or backward.

 

A person with such a face thinks 

to a degree - degree (stage - stage)

 

Without thinking or reacting quickly...

and he appears to be intelligent and adaptable.

The face is concave in shape when 

the forehead and chin are forward.

 

A person with a face like that is slow in thinking and reactions.

 

She/he is patient and does not respond to sudden stimuli.

However... 

he gives the impression of deception and suspicion... 

and does not show his true feelings to others.

When viewed from the side of the face.

The face is convex in shape when the forehead and chin are turned back.

Forehead back means... thinking quickly.

While

Chin back means... fast reaction

Therefore,

 it is not difficult to imagine the anger of a person with this face and his quick reaction.