A young woman was intently observing a handsome young man. He noticed her observations and promptly turned away and blushed. This is an example of

According to the introduction to the section on problem understanding,

a. understanding occurs when we have evolved an external representation for an internal problem. b. a primary criterion for understanding is the ability to represent the problem in matrix form. c. attention is necessary for problem solution, but it is not essential for problem understanding. d. understanding requires a close correspondence between the situation you need to understand and your own internal representation.

Which aspect of formal operational thought helps adolescents to become idealistic about the possibilities for their own lives, the environment, or for those in difficult and unfair situations around the world?

A) abstract thought B) separating reality from possibilities C) combinatorial logic D) reflective thinking