Why would a social psychologist decide to use deception in an experimental situation & describe common dilemmas?

Awaiver of the requirement for documentation of informed consent may be granted when: the investigator has no convenient place to store signed consent forms separate from the research datathe only record linking the subject and the research is the consent document and the principal risk is a breach of confidentiality.potential subjects might find some of the research questions embarrassing, personal, or intrusivethe subjects are literate in their own language; however, they do not read, write, or speak english

What city was divided between communism and democracy/capitalism after world war 2

How long is a representative’s term of office