Unlocking the secrets of which type of learning begins with noting what happens before and after a particular behavior?

In Rosenthal and Jacobson's (1968) classic study of the self-fulfilling prophecy, students showed greater increases in their IQ scores when

A) their peers were told that some of their classmates would do better in their studies during the upcoming year. B) their teachers were told that the students would probably make large intellectual gains during the upcoming school year. C) they were told that they could expect to do better in their studies during the upcoming school year. D) their parents were told that their children would make large intellectual gains during the upcoming school year.

The trait approach is currently the dominant method for studying personality

Indicate whether this statement is true or false.