(CNN) — The college students who showed up with bare midriffs and never contributed to discussions during Faye Rogaski’s communication classes were surprised when they weren’t picked for coveted internships and jobs.

They would also e-mail the public relations executive without so much as a greeting but with demands such as “I need a reference,” or “I need a letter of recommendation.” No “please,” no “thank you,” no face-to-face handshakes, introductions or follow-ups after classes.

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