I believe the answer is: DRA
DRA in this context stands for <span>Differential Reinforcement of Alternative.
In this schedule we aimed to increase the rate of appropriate/desired behavior by only responding to the subject only if the subject display a desired behavior.
This type of scheduling tend to be really effective in modifying children's behavior in classrooms setting.</span>
The two parts of the U.S. congress are the Senate and the House of Representatives. The head of the Senate is the Vice President (but since Vice President has other functions, there is also a leader pro tempore who represents the senate when the Vice President can't. The head of the House of Representatives is its Speaker.
Answer:
Not only did the Erie Canal open the American interior to increased trade, commerce, and settlement. It also became an "information superhighway" for new ideas. Hopefully this helps!
“First stage” will be the answer you are looking for hope this helps