The Publications of the Early 1960s Within the Operant Orientation

The publications of the early 1960s within the operant orientation seem to have been characterized by which two features?

A) Much of it was done with very resistant populations, and many of the applications took place in natural, everyday settings.
B) Much of it was done with very resistant populations, and many of the applications took place in highly controlled settings.
C) Much of it was limited to populations that had already received successful input from traditional psychology, and was mostly applied in highly controlled settings.
D) Much of it was limited to populations that had already received successful input from traditional psychology, and was mostly applied in natural, everyday settings.