According to my research on studies conducted by various sociologists, I can say that based on the information provided within the question this is an example of work done by Erving Goffman. Goffman was a sociologist born on June 11, 1922. He created the Social Action Theory as well as the defining principles of impression management which states that an individual tries to alter his/her own perception according to his/her goals.
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Plagiarism is to use someone else's text without attribution, whether intentional or not. In this case, the student cited the original source for his text, and the transcriptions used are quoted between quotation marks to indicate they were taken from the original text.
