Agroup of psychologists are studying how certain parts of the brain allow people to distinguish between positive and negative emotions. they are most likely working from the perspective.

Biological perspective.

Explanation:

Biological psychologists area of interested is the measure of biological, genetic or phsysiological variables to try and relate them to psychological or behavioural variables. In the example, a group of psychologists are studying how certain parts of the brain allow people to distinguish between positive and negative emotions. They are studying a biological and phsysiological variable to relate it to a psychological one, an emotion.

trade regulation is a field of law, often bracketed with antitrust (as in the phrase “antitrust and trade regulation law”), including government regulation of unfair methods of competition and unfair or deceptive business acts or practices. antitrust law is often considered a subset of trade regulation law. franchise and distribution law, consumer protection law, and advertising law are sometimes considered parts of trade regulation law.

in general the theory of economics says that the more open to trade a country is the better   the result for the same country and the whole economies.

in real life countries impose taxes, quotas, etc which is not so good for the economies.

this kind of commercial war between the usa and china is slowing down the growth of the whole world so we can say that it is a draw back of trade regulations. and the free trade agreements are benefits of trade regulations.

i honestly speaking this is too long