Answer:
The double-headed eagle was a main element of the coat of arms of the Russian Empire (1721-1917), modified in various ways from the reign of Ivan III (1462–1505) onwards, with the shape of the eagle getting its definite Russian form during the reign of Peter the Great (1682–1725).
Explanation:
I believe the answer is: negative reinforcement
Negative reinforcement refers to the type of reinforcement a form of reinforcement that make a subject become uncomfortable to the point where the subject would do some efforts to avoid or eliminate the negative reinforcement (just like the horrendous ding sound)
I believe the answer is: double-blind experiment
In double blind experiments, the subjects that receive the treatment is remained unknown by both the researchers and the subjects until the experiment is finished. The main purpose of double-blind experiment it eliminate the bias of perception that might exist among researchers.
Answer:
A core competence
Explanation:
Charmed by Claire is a successful retail boutique that sells women's accessories. Claire, the owner/manager, knows that women have many options when buying jewelry. When customers enter her store, they are greeted by name and given prompt, friendly attention. Customers return to the store because the service is excellent. Claire says the most important decision she makes is hiring the best staff because customer service is vital to her business. Customer service is: a core competence
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