Answer: undergound economy is when goods and services are bought and sold under the table without receipts, invoices or bills or any document that accredits the transaction. The intention is not to pay taxes and avoid expenses related to the transactions.
Explanation: the reason of underground economy is mainly poverty, ignorance and excessive regulation. Governments also make the cost of being formal and paying taxes very expensive with excessive regulations that tend to sink companies with high taxes and debt.
The topics studied in the field of social psychology include emotions and attitude, the self, and social cognition, as explained further below.
<h3>What is social psychology?</h3>
Social psychology is the strand of psychology that aims to explain our behavior according to how it is influenced by others. Social psychologists, thus, believe the way we act and think depends on our social interactions.
Among the topics studied in the field of social psychology are:
A famous controversial study in the field of social psychology is Milgram's electric shock experiment. Another questionable study is Zimbardo's simulation of a prison. Both studies show how easily we are able to conform to social rules and expectations. The problem with both is that the consequences of such conformity were quite violent.
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Models can be conceptual, graphical or mathematical as they are used in science. It allows one to break down a concept into simpler terms with a visual component. A limitation of models in science is that they are usually simplified versions of the real situation or concept.
B. None of these are examples of permissible limitations on the freedom of speech - this is the answer that represents an instance where the government can/or can't limit what people say.
