"Although we tend to associate hookups with college students, people of all ages are doing it, " says Justin Lehmiller, a social psychologist and Harvard researcher.

CNN: Young adults and a hookup culture

Although we would like to believe that all undergraduate students are rigorous seekers of knowledge, the job that many college students are really trying to get done, from our observation, is to pass their courses without having to read the textbook at all.

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