I believe the answer is: precedent
In social setting, we can see a precedent in court ruling.
When a supreme court ruled a controversial case, the other courts would most likely use the ruling as a precedent to settle similar cases that might appear in the future.
The correct answer is States with the lowest per capita GDP tend to be in the South.
Nico's parents are attempting to use a negative reinforcement technique embodied in the operant conditioning framework to increase Nico's studying.
Operant conditioning is a learning mechanism which consists on affecting the strength of a behaviour by reinforcement or punishment, depending if the aim is to increase or decrease it , respectively.
In this example, Nico's parents want him to acquire good studying habits, hence they allow him to quit from tasks he hates at home if he does so, for instance, doing the dishes. Hence, if he does not behave properly he will suffer the consequences and do the dishes. This a negative reinforcement as if the conduct is not appropiate, the response will be the obligation to do a task he hates.
The view of disability changing in the United States, according to david mechanic is that an increasing view that persons with any impairment can meet most of the demands of everyday living. According to him the increasing view of that person woth impairment can meet most of the demand of everyday living.
