[goodgracesbadinfluence]

What exactly is the difference?

[Tiroth]

Abstract thinking deals with theories and possibilities. This kind of thinking is often limited in usefulness by technology of the time. A lot of physics gets into this, we can't really use the knowledge of exactly how quickly an object will be pulled into a black hole a certain distance right now, and testing it would be extremely expensive.

Concrete thinking deals with the here and now. It leads to thinking of more testable things that can be applied to real life. A good example of this would be diagnosing a patient in medicine.

[nevermore]

Generalized concepts vs. specifics.

[birthday]

Abstract thinking is imagination whilst concrete thinking is logic.

[BeauGarcon]

Abstract thinking is imagination whilst concrete thinking is logic.

This is not the meaning of abstract or concrete thinking.

I suggest to look on this page: Abstraction - Wikipedia, the free encyclopedia.
I think it is explained well.

Abstract: keeping the general idea, leaving the details, less specific, ..

From abstract to more concrete
For example: communication tool (audio, visual, verbal) -> audio communication tool (gsm, phone, ...) -> phone -> Phone type x brand y -> my own phone of type x brand y.

You could even go further to more abstract or concrete. But when you go too far, it would be possible that the recipient won't understand your message (cause you generalized too much and some essentials were lost), but this depends on the context of the dialogue.

[Ti Dominant]

Abstract thinking is imagination whilst concrete thinking is logic.

That's very incorrect. Both are forms of "thinking," and so both may involve logic.

[affezwilling]

Concrete thinking deals with the tangible, physical objects and actions.

Abstract thinking deals with the intangible, theories and possibilities.

[birthday]

This is not the meaning of abstract or concrete thinking.

I suggest to look on this page: Abstraction - Wikipedia, the free encyclopedia.
I think it is explained well.

Abstract: keeping the general idea, leaving the details, less specific, ..

From abstract to more concrete
For example: communication tool (audio, visual, verbal) -> audio communication tool (gsm, phone, ...) -> phone -> Phone type x brand y -> my own phone of type x brand y.

You could even go further to more abstract or concrete. But when you go too far, it would be possible that the recipient won't understand your message (cause you generalized too much and some essentials were lost), but this depends on the context of the dialogue.

That's very incorrect. Both are forms of "thinking," and so both may involve logic.

Now the man upstairs has gotten it right. My words, whatever they may be, have always been and will always be, misunderstood by the general audience. That being said, it is safe to state that I lack the ability to express myself in a way that others can understand.