Give the answer in simple wording

Explain how a student's perception process and perceptual filters could complicate the communication process for the registrar's staff at a university which is trying to implement an unpopular change in policy requiring the payment of an additional fee to drop classes after the first week (where no fee has been charged for this drop prior to the change). The registrar has placed notification of the change in the student registration newspaper, as an e-mail message to all students, and on posters across the campus